鋅(Zinc)是(shi)(shi)(shi)一種(zhong)化(hua)學(xue)元素,它(ta)的(de)(de)化(hua)學(xue)符號是(shi)(shi)(shi)Zn,它(ta)的(de)(de)原子序(xu)數是(shi)(shi)(shi)30,在化(hua)學(xue)元素周(zhou)期(qi)表中位于(yu)第4周(zhou)期(qi)、第ⅡB族。鋅是(shi)(shi)(shi)一種(zhong)淺灰色的(de)(de)過(guo)渡金屬(shu),也(ye)是(shi)(shi)(shi)第四"常見"的(de)(de)金屬(shu)。在現代(dai)工業中,鋅是(shi)(shi)(shi)電池制造上不(bu)可(ke)替(ti)代(dai)、相當重要(yao)的(de)(de)金屬(shu)。此(ci)外,鋅也(ye)是(shi)(shi)(shi)人體必需(xu)的(de)(de)微量元素之一,起著極其(qi)重要(yao)的(de)(de)作(zuo)用。
鋅(xin),它的(de)名稱“zinc”來(lai)源于拉丁文Zincum,意思是“白色薄(bo)層”或“白色沉積物(wu)”。化(hua)學(xue)符號是Zn,它的(de)原子序數是30,原子量為(wei)65.38。鋅(xin)是一(yi)種銀白色略帶淡藍色金屬,密(mi)度為(wei)7.14g/cm3,熔點為(wei)419.5℃。在室溫下,性(xing)(xing)較脆;100~150℃時,變軟;超(chao)過(guo)200℃后(hou),又變干(gan)。鋅(xin)的(de)化(hua)學(xue)性(xing)(xing)質活潑,在常溫下的(de)空氣中,表面生成一(yi)層薄(bo)而(er)致密(mi)的(de)堿式碳酸鋅(xin)膜,可阻止進一(yi)步氧化(hua)。當溫度達到225℃后(hou),鋅(xin)劇烈(lie)氧化(hua)。
鋅(xin)(xin)(xin)在(zai)空氣中很難燃(ran)燒(shao),在(zai)氧(yang)(yang)(yang)氣中發出強烈白(bai)光(guang)。鋅(xin)(xin)(xin)表面(mian)有一(yi)層氧(yang)(yang)(yang)化(hua)(hua)鋅(xin)(xin)(xin),燃(ran)燒(shao)時冒出白(bai)煙(yan),白(bai)色(se)煙(yan)霧的(de)主要(yao)成(cheng)分是氧(yang)(yang)(yang)化(hua)(hua)鋅(xin)(xin)(xin),不(bu)僅阻隔(ge)鋅(xin)(xin)(xin)燃(ran)燒(shao),會(hui)折射焰色(se)形成(cheng)慘白(bai)光(guang)芒(mang)。鋅(xin)(xin)(xin)易溶(rong)于酸,也易從溶(rong)液中置換金、銀、銅(tong)等(deng)。鋅(xin)(xin)(xin)的(de)氧(yang)(yang)(yang)化(hua)(hua)膜熔點(dian)高(gao),但金屬(shu)鋅(xin)(xin)(xin)熔點(dian)卻很低,所以在(zai)酒精燈上加熱鋅(xin)(xin)(xin)片(pian),鋅(xin)(xin)(xin)片(pian)熔化(hua)(hua)變軟,卻不(bu)落下,正是因為氧(yang)(yang)(yang)化(hua)(hua)膜的(de)作用。鋅(xin)(xin)(xin)主要(yao)用于鋼鐵、冶(ye)金、機械(xie)、電氣、化(hua)(hua)工、輕(qing)工、軍(jun)事(shi)和(he)醫(yi)藥等(deng)領域(yu)。
管制信息:鋅(xin)粉(fen)別名鋅(xin)粒(li)、高純鋅(xin)、無砷鋅(xin)等屬于易制爆(bao)物品(pin),根據《危險化學品(pin)安全管理(li)條例》受(shou)公安部門管制。
《集韻》祖似切,音子。剛也。《玉篇》同釨。
相對(dui)原子量65.38(初中(zhong)階(jie)段一般取65)
鋅(xin)(xin)是(shi)一種(zhong)藍白(bai)色金屬。當溫(wen)度達到225℃后,鋅(xin)(xin)氧化激(ji)烈。鋅(xin)(xin)易溶于(yu)酸,也(ye)易從溶液中(zhong)置換金、銀、銅等。鋅(xin)(xin)在自然界(jie)中(zhong),多以硫化物狀態存在。主要(yao)含鋅(xin)(xin)礦(kuang)(kuang)物是(shi)閃(shan)鋅(xin)(xin)礦(kuang)(kuang)。也(ye)有(you)少(shao)量氧化礦(kuang)(kuang),如(ru)菱鋅(xin)(xin)礦(kuang)(kuang),如(ru)菱鋅(xin)(xin)礦(kuang)(kuang)和異(yi)極(ji)礦(kuang)(kuang)。
原子半徑(計算值):135(142)pm
共價半徑:131pm
范(fan)德華半徑:139pm
電(dian)子層:K-L-M-N
原子核(he)外電子排(pai)布:2,8,18,2
電子排布式(shi):[Ar]3d10 4s2
核電荷數:30
含量(ppm)
元(yuan)素在太陽中的含(han)量:2
元素(su)在海水中的含量(liang):0.00005(微量(liang)元素(su))
地殼中含量(liang):75(微量(liang)元素)
主氧化態:+2
其它:+1
電離(li)能(單(dan)位:kj/mol)
M - M+ 906.4
M+ - M2+ 1733.3
M2+ - M3+ 3832.6
M3+ - M4+ 5730
M4+ - M5+ 7970
M5+ - M6+ 10400
M6+ - M7+ 12900
M7+ - M8+ 16800
M8+ - M9+ 19600
M9+ - M10+ 23000
晶體結構:密排六方體
a = 266.49 pm
b = 266.49 pm
c = 494.68 pm
α = 90°
β = 90°
γ = 120°同位素
同位素(su) 豐(feng)度 半衰(shuai)(shuai)期 衰(shuai)(shuai)變(bian)模式 衰(shuai)(shuai)變(bian)能(neng)量MeV 衰(shuai)(shuai)變(bian)產物
64Zn 48.60% 穩定(ding)
65Zn 人造 244.26天 電子捕獲 1.352 65Cu
66Zn 27.90% 穩(wen)定(ding)
67Zn 4.10% 穩定
68Zn 18.80% 穩定
72Zn 人造 46.5小時 β衰變 0.458 72Ga
常(chang)見的含有鋅(xin)的合金(jin):馬口鐵(tie)——鍍(du)錫薄鋼板;黃(huang)銅——鋅(xin)和(he)銅的合金(jin),早被古人利用。黃(huang)銅的生產可能是冶金(jin)學(xue)上最早的偶然發現(xian)之一。
體積:9.16×10-6 m3/mol
聲速:3700m/s(293.15K)
電負(fu)性(xing):1.65(鮑林標度)
比熱容(rong):390J/(kg·K)
電導率:16.6×106/(m·Ω)
熱導率(lv):116W/(m·K)
莫氏硬度:2.5
汽化熱:115.3kJ/mol
熔(rong)化熱:7.322kJ/mol
蒸氣壓:192.2Pa(692.73K)
鋅的化學(xue)性質(zhi)與鋁相似,所以,通常可以由(you)鋁的性質(zhi),推斷鋅的化學(xue)性質(zhi)(兩性)。
①單質鋅,即(ji)可(ke)與酸反(fan)應,又可(ke)與堿(jian)反(fan)應。
②氧(yang)化(hua)鋅和氫氧(yang)化(hua)鋅,既可溶于酸,又可溶于堿(jian)。
單質鋅
氫氧化鋅
氯化鋅
硫化鋅
硝酸鋅
鋅的配合物
鋅(xin)(xin)被羅馬人所知,但很少(shao)使用。它(ta)第(di)一(yi)次以其金(jin)屬(shu)自身被認可(ke)是在印度,在拉賈斯坦邦的Zawar有一(yi)個鋅(xin)(xin)熔爐(lu)有大(da)量的鋅(xin)(xin),證(zheng)明了(le)大(da)規(gui)模(mo)的精煉在1100年到(dao)1500年。
鋅的(de)大規模精煉在中(zhong)國進行,于(yu)(yu)16世(shi)紀。東印度公司的(de)船在瑞典的(de)海(hai)岸沉沒,于(yu)(yu)1745年,其運載的(de)貨物是(shi)中(zhong)國的(de)鋅,分析了回收(shou)的(de)鑄錠證明(ming)了它們是(shi)幾乎純凈的(de)金屬。
在(zai)1668年(nian),佛蘭德的冶(ye)金(jin)家(jia)P.Moras de Respour,從氧化鋅中提取了(le)(le)金(jin)屬鋅,但歐(ou)洲認為鋅是由德國化學家(jia)Andreas Marggraf在(zai)1746年(nian)發現的,而且的確是他第一個確認了(le)(le)其是一種(zhong)新的金(jin)屬。
鋅(xin)也是(shi)人(ren)類自遠古(gu)時(shi)就知(zhi)道其化合物的(de)(de)元素之一。鋅(xin)礦(kuang)石和銅(tong)熔(rong)化制得(de)合金(jin)(jin)——黃銅(tong),早為古(gu)代人(ren)們所利用。但金(jin)(jin)屬狀鋅(xin)的(de)(de)獲得(de)比銅(tong)、鐵、錫、鉛要晚得(de)多,一般認(ren)為這是(shi)由于碳和鋅(xin)礦(kuang)共熱(re)時(shi),溫度(du)很(hen)快高達1000℃以(yi)上,而金(jin)(jin)屬鋅(xin)的(de)(de)沸點是(shi)906℃,故(gu)鋅(xin)即成為蒸氣狀態(tai),隨煙(yan)散失,不易為古(gu)代人(ren)們所察覺,只有當(dang)人(ren)們掌握了冷凝氣體的(de)(de)方(fang)法后,單質鋅(xin)才有可能被取得(de)。
世界(jie)上最(zui)早發現并(bing)使用鋅(xin)(xin)(xin)的是(shi)中國,在10~11世紀(ji)中國是(shi)首先(xian)大(da)規模生產鋅(xin)(xin)(xin)的國家。明(ming)朝末年宋(song)應(ying)星(xing)所著的《天(tian)工(gong)開物》一書(shu)中有世界(jie)上最(zui)早的關于煉鋅(xin)(xin)(xin)技術(shu)的記載。1750~1850年人們已開始用氧化(hua)(hua)鋅(xin)(xin)(xin)和硫化(hua)(hua)鋅(xin)(xin)(xin)來治病。
1869年Raulin發現(xian)鋅(xin)(xin)存在于生(sheng)活機體(ti)中,并為(wei)生(sheng)活機體(ti)所(suo)必需。1963年報告(gao)了人體(ti)的(de)鋅(xin)(xin)缺乏病(bing),于是鋅(xin)(xin)開始列為(wei)人體(ti)必需營(ying)養素。鋅(xin)(xin)的(de)生(sheng)產過程非常(chang)簡單,將爐(lu)甘石(即菱鋅(xin)(xin)礦石)裝滿在陶(tao)罐內密封,堆成錐形,罐與罐之間的(de)空隙(xi)用木炭填充,將罐打破,就可以得(de)到提(ti)取出來的(de)金(jin)屬鋅(xin)(xin)錠(ding)。
另外,我國化學史和分析化學研究的(de)開拓(tuo)者(zhe)王鏈(1888—1966)在1956年(nian)分析了唐、隋、明(ming)、清等古錢后,發現宋(song)朝的(de)紹圣錢中含鋅量高(gao)。鋅的(de)實際應用(yong)可能比《天(tian)工開物》成書年(nian)代還早。
鋅(xin)(xin)(xin)(xin)的(de)單(dan)一鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)較(jiao)少,鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)資源(yuan)(yuan)主(zhu)(zhu)要(yao)是鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)。中國銅鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)資源(yuan)(yuan)比較(jiao)豐富(fu),全(quan)國除上(shang)(shang)海(hai)、天津、香港外(wai),均(jun)(jun)有鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)產出(chu)。產地(di)有700多處,保有鉛總儲(chu)(chu)量(liang)3572萬噸,居(ju)(ju)世界第4位(wei);鋅(xin)(xin)(xin)(xin)儲(chu)(chu)量(liang)9384萬噸,居(ju)(ju)世界第4位(wei)。從省(sheng)際比較(jiao)來看,云南(nan)(nan)鉛儲(chu)(chu)量(liang)占(zhan)全(quan)國總儲(chu)(chu)量(liang)17%,位(wei)居(ju)(ju)全(quan)國榜(bang)首。廣(guang)(guang)(guang)東、內(nei)蒙古(gu)、甘肅、江(jiang)(jiang)西(xi)(xi)(xi)、湖南(nan)(nan)、四川次之,探(tan)明儲(chu)(chu)量(liang)均(jun)(jun)在200萬噸以上(shang)(shang)。全(quan)國鋅(xin)(xin)(xin)(xin)儲(chu)(chu)量(liang)以云南(nan)(nan)為最,占(zhan)全(quan)國21.8%;內(nei)蒙古(gu)次之,占(zhan)13.5%;其他如甘肅、廣(guang)(guang)(guang)東、廣(guang)(guang)(guang)西(xi)(xi)(xi)、湖南(nan)(nan)等(deng)(deng)省(sheng)(區)的(de)鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)資源(yuan)(yuan)也較(jiao)豐富(fu),均(jun)(jun)在600萬噸以上(shang)(shang)。鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)主(zhu)(zhu)要(yao)分(fen)布在滇西(xi)(xi)(xi)蘭坪(ping)地(di)區、滇川地(di)區、南(nan)(nan)嶺(ling)地(di)區、秦嶺(ling)-祁(qi)連山地(di)區以及內(nei)蒙古(gu)狼山-渣爾泰地(di)區。從礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)床(chuang)(chuang)類型(xing)來看,有與花(hua)崗巖(yan)(yan)(yan)(yan)(yan)有關的(de)花(hua)崗巖(yan)(yan)(yan)(yan)(yan)型(xing)(廣(guang)(guang)(guang)東連平)、夕卡巖(yan)(yan)(yan)(yan)(yan)型(xing)(湖南(nan)(nan)水口山)、斑巖(yan)(yan)(yan)(yan)(yan)型(xing)(云南(nan)(nan)姚(yao)安)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)床(chuang)(chuang),有與海(hai)相(xiang)火山有關的(de)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)床(chuang)(chuang)(青(qing)海(hai)錫鐵山),有產于陸相(xiang)火山巖(yan)(yan)(yan)(yan)(yan)中的(de)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)床(chuang)(chuang)(江(jiang)(jiang)西(xi)(xi)(xi)冷水坑和(he)浙江(jiang)(jiang)五部鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)),有產于海(hai)相(xiang)碳酸鹽(廣(guang)(guang)(guang)東凡口)、泥巖(yan)(yan)(yan)(yan)(yan)-碎屑(xie)巖(yan)(yan)(yan)(yan)(yan)系中的(de)鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)(甘肅西(xi)(xi)(xi)成(cheng)鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)),有產于海(hai)相(xiang)或陸相(xiang)砂巖(yan)(yan)(yan)(yan)(yan)和(he)礫巖(yan)(yan)(yan)(yan)(yan)中的(de)鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)(云南(nan)(nan)金頂(ding))等(deng)(deng)。鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)成(cheng)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)時代從太古(gu)宙到新生(sheng)代皆有,以古(gu)生(sheng)代鉛鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)(kuang)(kuang)資源(yuan)(yuan)力量(liang)豐富(fu)。
金融危機之后各國(guo)(guo)(guo)(guo)紛(fen)紛(fen)推出救市(shi)計劃,各大央行(xing)也(ye)陸續釋放流動性(xing),美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)持續量(liang)寬(kuan)、中(zhong)國(guo)(guo)(guo)(guo)推出四萬億以促使(shi)經(jing)(jing)(jing)濟(ji)復蘇(su),充裕的流動性(xing)使(shi)得金融屬(shu)性(xing)占據主要地位推升2010年(nian)鋅價不斷走(zou)高。《2013-2017年(nian)中(zhong)國(guo)(guo)(guo)(guo)鋅行(xing)業競爭態勢及(ji)投資(zi)發展預測報告(gao)》,全球經(jing)(jing)(jing)濟(ji)趨(qu)于穩定(ding)(ding),美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)緩慢復蘇(su),市(shi)場上關于QE3退出的預期逐漸增(zeng)強,倘若美(mei)(mei)(mei)國(guo)(guo)(guo)(guo)經(jing)(jing)(jing)濟(ji)政策發生改變(bian),美(mei)(mei)(mei)元將(jiang)(jiang)會走(zou)強,鋅價受(shou)其(qi)影響較(jiao)大。但同(tong)時值得注意的是(shi),經(jing)(jing)(jing)濟(ji)復蘇(su)也(ye)在一(yi)定(ding)(ding)程度上帶來(lai)需(xu)求(qiu)恢復,兩(liang)種屬(shu)性(xing)的博弈(yi)將(jiang)(jiang)共同(tong)決定(ding)(ding)鋅價未來(lai)走(zou)勢。
美國(guo)(guo)金融(rong)危機(ji)后通過(guo)持續(xu)寬松(song)的(de)(de)(de)貨幣政(zheng)策促進經(jing)(jing)濟和(he)就業增(zeng)長,盡管貨幣寬松(song)政(zheng)策的(de)(de)(de)邊(bian)際效用(yong)遞減(jian),但可以(yi)看到的(de)(de)(de)是(shi),美國(guo)(guo)GDP增(zeng)速的(de)(de)(de)低速增(zeng)長和(he)就業市場的(de)(de)(de)緩慢好轉表明,美國(guo)(guo)經(jing)(jing)濟正在弱勢(shi)復蘇。美國(guo)(guo)經(jing)(jing)濟復蘇以(yi)及(ji)房地產市場的(de)(de)(de)回暖帶動(dong)對鋅(xin)的(de)(de)(de)需求上升(sheng),但這種弱勢(shi)復蘇態勢(shi)仍比較脆弱,對鋅(xin)需求帶動(dong)也有(you)限。
等級 Zn(%) Cu(%) Pb(%) Fe(%)
1 ≥55 ≤0.8 ≤1.0 ≤6.0
2 ≥53 ≤0.8 ≤1.0 ≤6.0
3 ≥50 ≤1.0 ≤1.5 ≤8.0
4 ≥48 ≤1.0 ≤1.5 ≤12.0
5 ≥45 ≤1.5 ≤2.0 ≤12.0
6 ≥43 ≤1.5 ≤2.0 ≤12.0
7 ≥2.0 ≤2.5 ≤14.0
8 ≥40 ≤2.0 ≤2.8 ≤18.0
世(shi)(shi)界上(shang)鋅(xin)(xin)(xin)(xin)的(de)(de)(de)全部(bu)消費(fei)中大約有一半(ban)用于(yu)(yu)鍍鋅(xin)(xin)(xin)(xin),約10%用于(yu)(yu)黃銅和(he)青銅,不到(dao)10%用于(yu)(yu)鋅(xin)(xin)(xin)(xin)基(ji)合金,約7.5%用于(yu)(yu)化學制品,約13%用于(yu)(yu)制造(zao)干電池,以鋅(xin)(xin)(xin)(xin)餅、鋅(xin)(xin)(xin)(xin)板形(xing)式出現。國(guo)際鉛(qian)鋅(xin)(xin)(xin)(xin)研(yan)究(jiu)組預測(ce),2004年(nian)全球鋅(xin)(xin)(xin)(xin)消費(fei)量會比(bi)2003年(nian)的(de)(de)(de)985萬t增(zeng)長4.8%,2005年(nian)將再增(zeng)長4.3%,預計2005年(nian)中國(guo)將占(zhan)世(shi)(shi)界鋅(xin)(xin)(xin)(xin)消費(fei)總量的(de)(de)(de)四分之一,它(ta)的(de)(de)(de)消費(fei)增(zeng)長的(de)(de)(de)部(bu)分原因是鍍鋅(xin)(xin)(xin)(xin)鋼用量的(de)(de)(de)增(zeng)長。相比(bi)之下,美國(guo)可能只占(zhan)全球鋅(xin)(xin)(xin)(xin)需(xu)求的(de)(de)(de)十分之一。
(1)鍍(du)鋅(xin)(xin)有(you)(you)優(you)良(liang)的(de)(de)(de)抗大(da)(da)氣(qi)腐蝕性能(neng),在常溫下表面易生成(cheng)一(yi)層(ceng)(ceng)保(bao)(bao)護(hu)(hu)膜,因此(ci)鋅(xin)(xin)最大(da)(da)的(de)(de)(de)用(yong)(yong)途是用(yong)(yong)于(yu)鍍(du)鋅(xin)(xin)工業。被主要用(yong)(yong)于(yu)鋼(gang)材和(he)(he)鋼(gang)結構件的(de)(de)(de)表面鍍(du)層(ceng)(ceng)(如(ru)鍍(du)鋅(xin)(xin)板(ban)(ban)),廣(guang)泛用(yong)(yong)于(yu)汽車、建筑、船(chuan)舶、輕(qing)工等行(xing)業。21世紀后(hou)西方國(guo)家開始嘗試直接(jie)用(yong)(yong)鋅(xin)(xin)合金板(ban)(ban)做屋頂覆(fu)蓋材料(liao),其使(shi)(shi)用(yong)(yong)年限可(ke)(ke)長(chang)達120-140年,而且可(ke)(ke)回收再用(yong)(yong),而用(yong)(yong)鍍(du)鋅(xin)(xin)鐵板(ban)(ban)作屋頂材料(liao)的(de)(de)(de)使(shi)(shi)用(yong)(yong)壽命一(yi)般為5-10年。21世紀后(hou),鋼(gang)帶熱浸鍍(du)鋅(xin)(xin)量有(you)(you)顯著增(zeng)長(chang)。電鍍(du)鋅(xin)(xin)也有(you)(you)使(shi)(shi)用(yong)(yong),但該法一(yi)般用(yong)(yong)于(yu)較薄的(de)(de)(de)鍍(du)層(ceng)(ceng)和(he)(he)不同的(de)(de)(de)表面光(guang)潔度。使(shi)(shi)用(yong)(yong)含鋅(xin)(xin)粉(fen)的(de)(de)(de)涂料(liao)是涂層(ceng)(ceng)的(de)(de)(de)另(ling)一(yi)種方法;對于(yu)與水連續接(jie)觸的(de)(de)(de)物體,如(ru)用(yong)(yong)于(yu)船(chuan)舶、橋(qiao)梁和(he)(he)近海油氣(qi)井(jing)架的(de)(de)(de)大(da)(da)的(de)(de)(de)鋼(gang)構件,只須和(he)(he)大(da)(da)的(de)(de)(de)鋅(xin)(xin)塊連接(jie),便可(ke)(ke)得到(dao)保(bao)(bao)護(hu)(hu),不過鋅(xin)(xin)塊要定期更換。
(2)鋅(xin)合金(jin)(jin)(jin)(jin)用(yong)(yong)(yong)于(yu)汽車(che)制(zhi)(zhi)造(zao)和機械(xie)行(xing)(xing)業(ye)。鋅(xin)具有適用(yong)(yong)(yong)的(de)(de)(de)(de)機械(xie)性(xing)(xing)(xing)能(neng)(neng)。鋅(xin)本身的(de)(de)(de)(de)強度(du)(du)和硬(ying)度(du)(du)不高(gao)(gao),但加入鋁、銅(tong)等(deng)合金(jin)(jin)(jin)(jin)元素后,其(qi)(qi)強度(du)(du)和硬(ying)度(du)(du)均大(da)為提高(gao)(gao),猶(you)其(qi)(qi)是鋅(xin)銅(tong)鈦(tai)(tai)合金(jin)(jin)(jin)(jin)的(de)(de)(de)(de)出現(xian),其(qi)(qi)綜(zong)合機械(xie)性(xing)(xing)(xing)能(neng)(neng)已接(jie)近或達(da)(da)到鋁合金(jin)(jin)(jin)(jin)、黃(huang)銅(tong)、灰鑄(zhu)鐵的(de)(de)(de)(de)水平,其(qi)(qi)抗蠕變性(xing)(xing)(xing)能(neng)(neng)也(ye)大(da)幅(fu)度(du)(du)被(bei)提高(gao)(gao)。因(yin)此,鋅(xin)銅(tong)鈦(tai)(tai)合金(jin)(jin)(jin)(jin)已被(bei)廣泛(fan)應用(yong)(yong)(yong)于(yu)小五金(jin)(jin)(jin)(jin)生(sheng)產(chan)中(zhong)。主要(yao)為壓鑄(zhu)件,用(yong)(yong)(yong)于(yu)汽車(che)、建筑、部分(fen)電(dian)(dian)(dian)氣設備、家用(yong)(yong)(yong)電(dian)(dian)(dian)器、玩具等(deng)的(de)(de)(de)(de)零部件生(sheng)產(chan)。許多(duo)鋅(xin)合金(jin)(jin)(jin)(jin)的(de)(de)(de)(de)加工(gong)性(xing)(xing)(xing)能(neng)(neng)都比較(jiao)優(you)良,道次(ci)加工(gong)率可達(da)(da)60%-80%。中(zhong)壓性(xing)(xing)(xing)能(neng)(neng)優(you)越,可進(jin)(jin)行(xing)(xing)深拉(la)延(yan),并具有自潤(run)滑性(xing)(xing)(xing),延(yan)長了模具壽命,可用(yong)(yong)(yong)釬焊(han)或電(dian)(dian)(dian)阻焊(han)或電(dian)(dian)(dian)弧(hu)焊(han)(需在氦氣中(zhong))進(jin)(jin)行(xing)(xing)焊(han)接(jie),表面可進(jin)(jin)行(xing)(xing)電(dian)(dian)(dian)鍍、涂漆處理,切削加工(gong)性(xing)(xing)(xing)能(neng)(neng)良好。在一定條件下具有優(you)越性(xing)(xing)(xing)。一般(ban)用(yong)(yong)(yong)于(yu)機械(xie)制(zhi)(zhi)造(zao)業(ye)。含少量鉛鎘等(deng)元素的(de)(de)(de)(de)鋅(xin)板(ban)可制(zhi)(zhi)成鋅(xin)錳干電(dian)(dian)(dian)池負(fu)極、印花鋅(xin)板(ban)、有粉腐蝕照(zhao)相制(zhi)(zhi)板(ban)和膠印印刷板(ban)等(deng)。
(3)鋅(xin)可以用來制(zhi)作(zuo)電(dian)(dian)(dian)池(chi)。例如:鋅(xin)錳電(dian)(dian)(dian)池(chi)以及鋅(xin)空氣蓄(xu)電(dian)(dian)(dian)池(chi)。
鋅錳電(dian)池:鋅作為(wei)負極活性(xing)(xing)(xing)物質(zhi),兼作電(dian)池的(de)容器和(he)(he)負極引電(dian)體,是決定電(dian)池貯(zhu)存性(xing)(xing)(xing)能(neng)的(de)主要材料。在鋅片中(zhong)含有(you)少量的(de)鎘和(he)(he)鉛。鎘能(neng)增強(qiang)鋅的(de)強(qiang)度,鉛能(neng)改(gai)進(jin)鋅的(de)延(yan)展加工性(xing)(xing)(xing)能(neng)。鎘與鉛均(jun)能(neng)提高氫(qing)在鋅電(dian)極上的(de)過(guo)電(dian)位,減少鋅電(dian)極的(de)自(zi)(zi)放電(dian),減緩鋅片的(de)腐蝕和(he)(he)氫(qing)氣的(de)釋放。鋅片中(zhong)若含有(you)Cu、Fe、Ni等,將降低H2在鋅電(dian)極上析出的(de)過(guo)電(dian)位,加速電(dian)池在貯(zhu)存過(guo)程(cheng)中(zhong)的(de)自(zi)(zi)放電(dian),因此這些有(you)害(hai)雜質(zhi)必須嚴格控制(zhi)。
鋅(xin)(xin)空(kong)(kong)氣(qi)蓄電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi):鋅(xin)(xin)空(kong)(kong)氣(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)又(you)稱鋅(xin)(xin)氧電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi),是(shi)金(jin)屬(shu)空(kong)(kong)氣(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)一種(zhong)(zhong)。鋅(xin)(xin)空(kong)(kong)氣(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)比(bi)能(neng)(neng)(neng)理論值是(shi)1350W·h/kg,最新(xin)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)比(bi)能(neng)(neng)(neng)量已(yi)(yi)達到(dao)了(le)230Wh/kg,幾(ji)乎是(shi)鉛(qian)酸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)8倍(bei)。可見(jian)鋅(xin)(xin)空(kong)(kong)氣(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)發(fa)展空(kong)(kong)間非常(chang)大。鋅(xin)(xin)空(kong)(kong)氣(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)一般(ban)采取抽(chou)換(huan)鋅(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)(de)辦(ban)法(fa)進(jin)行(xing)(xing)“機械式(shi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)”。更換(huan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)的(de)(de)(de)時(shi)間在(zai)幾(ji)分(fen)鐘即可完成(cheng)。換(huan)上(shang)新(xin)的(de)(de)(de)鋅(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji),“充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)”時(shi)間極(ji)(ji)短,非常(chang)方便(bian)。如(ru)此(ci)種(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)得到(dao)發(fa)展,省去了(le)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)站等(deng)社(she)會保障設施(shi)的(de)(de)(de)興建。鋅(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)可在(zai)超市、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)經(jing)營點、汽配商店等(deng)購買,對普及(ji)(ji)此(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)車(che)十(shi)分(fen)有(you)(you)利。這種(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)具(ju)有(you)(you)體積(ji)小,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷容量大,質量小,能(neng)(neng)(neng)在(zai)寬廣的(de)(de)(de)溫度(du)范圍(wei)內正常(chang)工作(zuo),且無(wu)腐蝕,工作(zuo)安全可靠。只是(shi)鋅(xin)(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解還原過(guo)程中,比(bi)較耗能(neng)(neng)(neng),每噸氧化鋅(xin)(xin)還原成(cheng)鋅(xin)(xin)需要消耗2500度(du)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),所以用(yong)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)汽車(che)上(shang),成(cheng)本較高(gao)。試(shi)驗電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷容量僅是(shi)鉛(qian)酸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)5倍(bei),不甚理想。但5倍(bei)于鉛(qian)酸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷量已(yi)(yi)引(yin)起(qi)了(le)世(shi)人的(de)(de)(de)關注,美國、墨西哥,新(xin)加坡及(ji)(ji)一些歐洲國家都已(yi)(yi)在(zai)郵政車(che)、公共(gong)汽車(che)、摩托車(che)上(shang)進(jin)行(xing)(xing)試(shi)用(yong),也(ye)是(shi)一極(ji)(ji)有(you)(you)前途的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)車(che)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)(chi)(chi)(chi)。
此外,鋅(xin)(xin)(xin)(xin)具有(you)(you)良好的(de)(de)(de)抗(kang)電(dian)磁(ci)場性(xing)能(neng)。鋅(xin)(xin)(xin)(xin)的(de)(de)(de)導電(dian)率(lv)是(shi)(shi)標準電(dian)工銅(tong)的(de)(de)(de)29%,鋅(xin)(xin)(xin)(xin)板是(shi)(shi)一種非常有(you)(you)效的(de)(de)(de)屏蔽材料(liao)(liao)(liao),同時由于(yu)鋅(xin)(xin)(xin)(xin)是(shi)(shi)非磁(ci)性(xing)的(de)(de)(de),適合(he)做(zuo)儀器(qi)儀表零件的(de)(de)(de)材料(liao)(liao)(liao)及儀表殼(ke)體及錢幣,同時,鋅(xin)(xin)(xin)(xin)自(zi)身及與(yu)其他(ta)金(jin)屬碰撞(zhuang)不會發生(sheng)火花(hua),適合(he)作井下防爆(bao)器(qi)材。廣泛用于(yu)橡膠、涂(tu)料(liao)(liao)(liao)、搪瓷、醫藥、印刷、纖(xian)維等工業。鋅(xin)(xin)(xin)(xin)具有(you)(you)適宜(yi)的(de)(de)(de)化學性(xing)能(neng)。鋅(xin)(xin)(xin)(xin)可(ke)與(yu)NH4CI發生(sheng)作用,放(fang)出H+正(zheng)(zheng)離子。鋅(xin)(xin)(xin)(xin)-二氧化錳電(dian)池正(zheng)(zheng)是(shi)(shi)利用鋅(xin)(xin)(xin)(xin)的(de)(de)(de)這(zhe)個特點,用鋅(xin)(xin)(xin)(xin)合(he)金(jin)做(zuo)電(dian)池的(de)(de)(de)外殼(ke),既是(shi)(shi)電(dian)池電(dian)解質(zhi)的(de)(de)(de)容器(qi),又參加電(dian)池反(fan)應(ying)構成電(dian)池的(de)(de)(de)陽(yang)極。它的(de)(de)(de)這(zhe)一性(xing)能(neng)也被廣泛地(di)應(ying)用于(yu)醫藥行(xing)業。鋅(xin)(xin)(xin)(xin)與(yu)酸或強(qiang)堿都能(neng)發生(sheng)反(fan)應(ying),放(fang)出氫氣。鋅(xin)(xin)(xin)(xin)肥(硫酸鋅(xin)(xin)(xin)(xin)、氯化鋅(xin)(xin)(xin)(xin))有(you)(you)促進植物(wu)細胞(bao)呼吸、碳水化合(he)物(wu)的(de)(de)(de)代謝(xie)等作用。鋅(xin)(xin)(xin)(xin)粉、鋅(xin)(xin)(xin)(xin)鋇白、鋅(xin)(xin)(xin)(xin)鉻黃可(ke)作顏料(liao)(liao)(liao)。氧化鋅(xin)(xin)(xin)(xin)還可(ke)用于(yu)醫藥、橡膠、油(you)漆等工業。
中國(guo)(guo)鉛鋅(xin)(xin)業生產(chan)(chan)布(bu)(bu)局,依據(ju)鉛鋅(xin)(xin)礦(kuang)產(chan)(chan)地的分布(bu)(bu)和(he)建設條件,經(jing)40多(duo)年來的發展、建設,現已形成東北(bei)、湖(hu)南、兩(liang)廣、滇川、西北(bei)等五大(da)鉛鋅(xin)(xin)采選冶和(he)加工(gong)配套的生產(chan)(chan)基地,其鉛產(chan)(chan)量占(zhan)(zhan)全(quan)國(guo)(guo)總產(chan)(chan)量的85%以上,鋅(xin)(xin)產(chan)(chan)量占(zhan)(zhan)全(quan)國(guo)(guo)總產(chan)(chan)量的95%。
1.東(dong)北(bei)鉛(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)基地(di)。東(dong)北(bei)地(di)區是我國(guo)開發較早的鉛(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)基地(di)之一。早在50年(nian)代(dai)初期,其鉛(qian)(qian)產(chan)量(liang)占全國(guo)鉛(qian)(qian)產(chan)量(liang)的80%以上(shang),在中國(guo)鉛(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)居于重要(yao)地(di)位(wei)。東(dong)北(bei)基地(di)以七礦(kuang)(kuang)(kuang)兩廠(chang)(chang)為主,即青城子(zi)鉛(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)(kuang)、八家子(zi)鉛(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)(kuang)、柴河鉛(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)(kuang)(現已閉坑(keng))、桓仁銅鋅(xin)(xin)礦(kuang)(kuang)(kuang)、紅透山(shan)銅鋅(xin)(xin)礦(kuang)(kuang)(kuang)、西(xi)林鉛(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)(kuang)、天寶山(shan)鉛(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)(kuang)和沈(shen)陽冶煉廠(chang)(chang)、葫蘆島鋅(xin)(xin)廠(chang)(chang)。七礦(kuang)(kuang)(kuang)兩廠(chang)(chang)不僅是東(dong)北(bei)鉛(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)基地(di)的支柱廠(chang)(chang)礦(kuang)(kuang)(kuang),也是培養造就(jiu)科技(ji)人才的基地(di)。六(liu)七十年(nian)代(dai)曾(ceng)向全國(guo)新(xin)建的鉛(qian)(qian)鋅(xin)(xin)企(qi)業(ye)輸(shu)送(song)大(da)批具有(you)實踐(jian)經驗的科技(ji)和管理(li)人才以及生(sheng)產(chan)技(ji)術(shu)工人,為中國(guo)鉛(qian)(qian)鋅(xin)(xin)業(ye)的發展做出了積極(ji)貢獻。
2.湖南鉛(qian)鋅(xin)(xin)生(sheng)產(chan)(chan)(chan)基(ji)地。湖南鉛(qian)鋅(xin)(xin)礦(kuang)(kuang)產(chan)(chan)(chan)資(zi)源(yuan)豐富,而且富礦(kuang)(kuang)多(duo),大(da)部分(fen)礦(kuang)(kuang)產(chan)(chan)(chan)地可開發利用。該(gai)基(ji)地鉛(qian)鋅(xin)(xin)廠(chang)礦(kuang)(kuang)是五六十(shi)年代建成的(de),由水(shui)口山礦(kuang)(kuang)務局、桃林鉛(qian)鋅(xin)(xin)礦(kuang)(kuang)、黃沙坪鉛(qian)鋅(xin)(xin)礦(kuang)(kuang)、東坡(po)鉛(qian)鋅(xin)(xin)礦(kuang)(kuang)和株洲冶煉(lian)廠(chang)等(deng)組成的(de)湖南鉛(qian)鋅(xin)(xin)生(sheng)產(chan)(chan)(chan)基(ji)地,是全國(guo)(guo)自產(chan)(chan)(chan)原料的(de)全國(guo)(guo)最大(da)的(de)鉛(qian)鋅(xin)(xin)生(sheng)產(chan)(chan)(chan)基(ji)地,在全國(guo)(guo)產(chan)(chan)(chan)量占有重(zhong)要(yao)地位。
3.兩廣鉛鋅(xin)(xin)生(sheng)產基(ji)地(di)。廣東(dong)、廣西兩省(sheng)區的鉛鋅(xin)(xin)資源豐富(fu),兩省(sheng)區是(shi)70年代形成的我國大(da)型(xing)鉛鋅(xin)(xin)生(sheng)產基(ji)地(di)之一。廣東(dong)以凡口(kou)鉛鋅(xin)(xin)礦(kuang)(kuang)和韶關冶煉廠(chang)(chang)為(wei)主(zhu),其次是(shi)丙村鉛鋅(xin)(xin)礦(kuang)(kuang)、昌化(hua)鉛鋅(xin)(xin)礦(kuang)(kuang)、大(da)尖山鉛鋅(xin)(xin)礦(kuang)(kuang)。廣西有泗頂鉛鋅(xin)(xin)礦(kuang)(kuang)、大(da)新(xin)鉛鋅(xin)(xin)礦(kuang)(kuang)、河三鉛鋅(xin)(xin)礦(kuang)(kuang)、柳州鋅(xin)(xin)品廠(chang)(chang)和大(da)廠(chang)(chang)礦(kuang)(kuang)務局等。
4.滇川鉛(qian)(qian)(qian)(qian)鋅(xin)生產基地(di)。云(yun)南鉛(qian)(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)產資(zi)源十分豐富,鉛(qian)(qian)(qian)(qian)鋅(xin)保(bao)有(you)儲量均居全國之(zhi)首。該基地(di)鉛(qian)(qian)(qian)(qian)鋅(xin)企業也是(shi)五(wu)六十年(nian)代建成的,主要是(shi)會澤鉛(qian)(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)、瀾滄老廠鉛(qian)(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)和昆明冶煉廠、個舊雞街(jie)冶煉廠。云(yun)南鉛(qian)(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)產資(zi)源具有(you)廣闊的開發前景(jing),90年(nian)代開始興建超大型鉛(qian)(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)床(chuang)金頂礦(kuang)(kuang)(kuang)(kuang)山。四川有(you)會東(dong)鉛(qian)(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)、會理鉛(qian)(qian)(qian)(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)兩個主要礦(kuang)(kuang)(kuang)(kuang)山以(yi)及(ji)一批中小型礦(kuang)(kuang)(kuang)(kuang)山,21世紀以(yi)來鉛(qian)(qian)(qian)(qian)鋅(xin)精礦(kuang)(kuang)(kuang)(kuang)產量猛增。
5.西(xi)(xi)(xi)北(bei)鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)生(sheng)產(chan)基(ji)地。西(xi)(xi)(xi)北(bei)地區鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)產(chan)資源(yuan)也很豐(feng)富(fu),主(zhu)要分布(bu)在甘(gan)陜青三省,而(er)且西(xi)(xi)(xi)成礦(kuang)(kuang)帶(dai)經(jing)勘查(cha)儲量(liang)又有大(da)(da)幅度的增長,資源(yuan)前景(jing)十分可(ke)(ke)觀。該基(ji)地鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)生(sheng)產(chan)以白銀有色金(jin)屬(shu)公(gong)司為(wei)主(zhu),有白銀廠(chang)(chang)小鐵山鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)、第三冶(ye)煉廠(chang)(chang)和(he)西(xi)(xi)(xi)北(bei)鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)冶(ye)煉廠(chang)(chang),陜西(xi)(xi)(xi)有鉛(qian)(qian)(qian)硐山鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)、二(er)(er)里河鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)、銀洞梁鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)等(deng)和(he)青海錫(xi)鐵山礦(kuang)(kuang)務局(ju)。西(xi)(xi)(xi)北(bei)鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)產(chan)量(liang)較少(shao),但開(kai)發前景(jing)可(ke)(ke)觀。一是(shi)(shi)有豐(feng)富(fu)的鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)產(chan)資源(yuan),位于甘(gan)陜交(jiao)界的西(xi)(xi)(xi)成-鳳太礦(kuang)(kuang)帶(dai),經(jing)近(jin)20余年勘查(cha)出10多個(ge)大(da)(da)中型鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)銀金(jin)礦(kuang)(kuang)床(chuang),其中廠(chang)(chang)壩-李家溝鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)達到超大(da)(da)型規模,銀達到大(da)(da)型。二(er)(er)是(shi)(shi)廠(chang)(chang)壩正在抓緊建設一座大(da)(da)型礦(kuang)(kuang)山,將成為(wei)西(xi)(xi)(xi)北(bei)冶(ye)煉廠(chang)(chang)主(zhu)要礦(kuang)(kuang)物(wu)原料供給基(ji)地,是(shi)(shi)全(quan)國大(da)(da)型鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)礦(kuang)(kuang)山之一。
除上述五大鉛(qian)鋅(xin)生產(chan)基地外,內(nei)蒙(meng)古、江(jiang)西、貴(gui)州等(deng)(deng)省區(qu)也建設了一(yi)批中小型礦(kuang)(kuang)(kuang)(kuang)山(shan)。其中內(nei)蒙(meng)古梧桐花鉛(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)、白音諾(nuo)鉛(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)、翁(weng)牛(niu)特旗硐(dong)子鉛(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)等(deng)(deng)礦(kuang)(kuang)(kuang)(kuang)山(shan)。內(nei)蒙(meng)古是(shi)全(quan)國生產(chan)鉛(qian)鋅(xin)精(jing)礦(kuang)(kuang)(kuang)(kuang)主要省區(qu)之一(yi),開發前景巨(ju)大。江(jiang)西有銀山(shan)鉛(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)等(deng)(deng)。貴(gui)州有赫章鉛(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)、杉(shan)樹林鉛(qian)鋅(xin)礦(kuang)(kuang)(kuang)(kuang)等(deng)(deng)。
侵入途徑:吸入、食(shi)入。
吸入會引起口渴、干咳、頭(tou)痛(tong)、頭(tou)暈(yun)、高熱、寒(han)戰等。粉塵對(dui)眼有刺激(ji)性。口服刺激(ji)胃腸道(dao)。長期(qi)反復接(jie)觸對(dui)皮膚有刺激(ji)性。
1.貯(zhu)于(yu)陰涼干燥處,遠離(li)火種、熱源。
2.與氧化劑、胺類、硫、磷、酸堿(jian)類分儲。
3.滅火:干粉(fen)、干砂(sha)。禁用水和泡沫。
維持人體正常食欲
缺鋅會導致味覺下降,出現厭(yan)食、偏食甚至異食。
增強人體免疫力
鋅元素是免(mian)疫(yi)(yi)器(qi)官胸(xiong)腺發育的(de)營(ying)養素,只(zhi)有(you)鋅量充足才(cai)能有(you)效保證胸(xiong)腺發育,正(zheng)常分化T淋巴細胞,促進(jin)細胞免(mian)疫(yi)(yi)功能。
鋅有幫助生(sheng)長(chang)發育(yu)、智力(li)發育(yu)、提高免疫(yi)力(li)的(de)作用,缺乏鋅會對我們的(de)身體,特(te)別是生(sheng)長(chang)發育(yu)造成嚴(yan)重影(ying)響,所以,補(bu)(bu)充足夠的(de)鋅是生(sheng)長(chang)發育(yu),智力(li)發育(yu)必須的(de)。平(ping)時除了飲食(shi)要均衡(heng)外,別忘(wang)了適(shi)當補(bu)(bu)充營養。
兒童
味覺(jue)障礙:厭食、偏(pian)食或異食;
皮膚疾患(huan):易(yi)患(huan)口(kou)腔潰(kui)瘍,受損傷口(kou)不易(yi)愈合(he),青(qing)春期痤瘡等(deng);
生長(chang)發育不良(liang):身材矮小、瘦弱;
免疫力下降(jiang),經常(chang)感冒(mao)、發燒;
孕婦
妊娠反應加(jia)重(zhong):嗜酸(suan),嘔(ou)吐加(jia)重(zhong)
宮內胎兒發(fa)育遲(chi)緩:導致早產(chan)兒、低體重兒
分娩合(he)并癥增(zeng)多:產(chan)程延(yan)長、流產(chan)
推薦攝入量
年齡(歲) RNI(mg) UL(mg)
0~ 1.5
0.5~ 8 13
1~ 9 23
4~ 12 23
7~ 13.5 28
男 女 男 女
11~ 18.0 15.0 37 34
14~ 19.0 15.5 42 35
18~ 15.0 11.5 45 37
50 11.5 11.5 37 37
孕婦 35
早期 11.5
中期 16.5
晚期 16.5
乳母 21.5 35