鋅(xin)(Zinc)是(shi)(shi)一種化學(xue)元素,它的(de)(de)化學(xue)符號(hao)是(shi)(shi)Zn,它的(de)(de)原(yuan)子序(xu)數是(shi)(shi)30,在化學(xue)元素周(zhou)期(qi)(qi)表(biao)中位(wei)于第(di)4周(zhou)期(qi)(qi)、第(di)ⅡB族。鋅(xin)是(shi)(shi)一種淺灰色的(de)(de)過渡金屬,也(ye)是(shi)(shi)第(di)四"常見"的(de)(de)金屬。在現代(dai)工業(ye)中,鋅(xin)是(shi)(shi)電池制造上不可替代(dai)、相當重(zhong)要的(de)(de)金屬。此外,鋅(xin)也(ye)是(shi)(shi)人體(ti)必需的(de)(de)微量元素之一,起(qi)著極其重(zhong)要的(de)(de)作用。
鋅(xin)(xin),它的(de)名稱(cheng)“zinc”來源于拉(la)丁文Zincum,意思(si)是“白色(se)(se)薄層”或(huo)“白色(se)(se)沉積物(wu)”。化(hua)學(xue)符號(hao)是Zn,它的(de)原子(zi)(zi)序數是30,原子(zi)(zi)量為(wei)(wei)(wei)65.38。鋅(xin)(xin)是一種銀白色(se)(se)略帶淡藍(lan)色(se)(se)金屬,密度(du)為(wei)(wei)(wei)7.14g/cm3,熔點為(wei)(wei)(wei)419.5℃。在室溫(wen)下,性(xing)較脆;100~150℃時,變軟(ruan);超(chao)過200℃后(hou),又變干。鋅(xin)(xin)的(de)化(hua)學(xue)性(xing)質活潑,在常溫(wen)下的(de)空氣中,表(biao)面生成一層薄而致密的(de)堿式(shi)碳(tan)酸(suan)鋅(xin)(xin)膜(mo),可(ke)阻(zu)止進一步(bu)氧(yang)化(hua)。當溫(wen)度(du)達到225℃后(hou),鋅(xin)(xin)劇烈氧(yang)化(hua)。
鋅在空氣中很難燃(ran)燒(shao),在氧氣中發出強烈白(bai)光(guang)。鋅表面(mian)有一層氧化(hua)鋅,燃(ran)燒(shao)時冒出白(bai)煙,白(bai)色煙霧的(de)主要成分(fen)是氧化(hua)鋅,不僅阻(zu)隔鋅燃(ran)燒(shao),會折射焰色形成慘白(bai)光(guang)芒。鋅易(yi)溶于酸,也易(yi)從溶液中置換金、銀、銅(tong)等。鋅的(de)氧化(hua)膜熔點(dian)高(gao),但金屬鋅熔點(dian)卻(que)很低,所以在酒精燈(deng)上加熱鋅片,鋅片熔化(hua)變軟(ruan),卻(que)不落下,正是因為(wei)氧化(hua)膜的(de)作用(yong)(yong)。鋅主要用(yong)(yong)于鋼鐵、冶金、機械(xie)、電氣、化(hua)工、輕工、軍事和醫藥等領(ling)域。
管制信(xin)息:鋅粉別名(ming)鋅粒、高純鋅、無砷鋅等屬于易制爆物(wu)品,根據《危險(xian)化學品安(an)全管理條例》受公(gong)安(an)部門管制。
《集韻》祖似切(qie),音子(zi)。剛也。《玉篇》同釨。
相對原子量65.38(初中階段一(yi)般取65)
鋅(xin)(xin)是(shi)一種藍白(bai)色金屬。當溫度達到225℃后,鋅(xin)(xin)氧化(hua)(hua)激(ji)烈。鋅(xin)(xin)易溶于(yu)酸,也易從溶液中(zhong)置換(huan)金、銀、銅等。鋅(xin)(xin)在自然界中(zhong),多以硫化(hua)(hua)物狀(zhuang)態存在。主(zhu)要含(han)鋅(xin)(xin)礦(kuang)(kuang)物是(shi)閃(shan)鋅(xin)(xin)礦(kuang)(kuang)。也有少量氧化(hua)(hua)礦(kuang)(kuang),如(ru)菱(ling)鋅(xin)(xin)礦(kuang)(kuang),如(ru)菱(ling)鋅(xin)(xin)礦(kuang)(kuang)和(he)異極礦(kuang)(kuang)。
原(yuan)子(zi)半(ban)徑(計算值(zhi)):135(142)pm
共(gong)價半徑:131pm
范德(de)華(hua)半徑:139pm
電子層(ceng):K-L-M-N
原(yuan)子核外(wai)電子排布:2,8,18,2
電子排布式:[Ar]3d10 4s2
核電荷數:30
含量(ppm)
元素在太陽中的含量:2
元(yuan)素在海水中的含量:0.00005(微量元(yuan)素)
地殼中(zhong)含量(liang):75(微(wei)量(liang)元素)
主氧化態:+2
其它:+1
電離能(neng)(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(su)
同(tong)位素 豐(feng)度(du) 半(ban)衰期 衰變(bian)模式 衰變(bian)能量MeV 衰變(bian)產物
64Zn 48.60% 穩定(ding)
65Zn 人造 244.26天 電(dian)子(zi)捕獲 1.352 65Cu
66Zn 27.90% 穩(wen)定
67Zn 4.10% 穩定
68Zn 18.80% 穩定(ding)
72Zn 人造 46.5小時 β衰變 0.458 72Ga
常見的含(han)有鋅(xin)的合金:馬口鐵——鍍(du)錫薄鋼(gang)板;黃銅(tong)(tong)——鋅(xin)和銅(tong)(tong)的合金,早被古人利用。黃銅(tong)(tong)的生產可(ke)能是冶(ye)金學上最(zui)早的偶然(ran)發(fa)現之一(yi)。
體積:9.16×10-6 m3/mol
聲速:3700m/s(293.15K)
電負性:1.65(鮑(bao)林(lin)標度(du))
比熱容:390J/(kg·K)
電導率:16.6×106/(m·Ω)
熱導率:116W/(m·K)
莫氏硬度:2.5
汽化熱:115.3kJ/mol
熔化熱:7.322kJ/mol
蒸氣壓:192.2Pa(692.73K)
鋅的化(hua)學性質(zhi)與鋁相(xiang)似,所以,通(tong)常可以由鋁的性質(zhi),推斷鋅的化(hua)學性質(zhi)(兩性)。
①單質鋅,即可與酸反(fan)應,又可與堿反(fan)應。
②氧化(hua)(hua)鋅和(he)氫氧化(hua)(hua)鋅,既可溶于(yu)酸,又可溶于(yu)堿。
單質鋅
氫氧化鋅
氯化鋅
硫化鋅
硝酸鋅
鋅的配合物
鋅被(bei)羅馬人所知,但很少使(shi)用。它第一次以其金(jin)屬(shu)自身被(bei)認(ren)可是在印(yin)度(du),在拉賈(jia)斯坦邦(bang)的Zawar有(you)(you)一個鋅熔爐有(you)(you)大量的鋅,證明了(le)大規模的精煉在1100年(nian)到1500年(nian)。
鋅的大規模精煉在中國進行(xing),于16世紀。東印度(du)公司的船(chuan)在瑞典(dian)的海岸沉沒(mei),于1745年,其(qi)運載的貨(huo)物是(shi)(shi)中國的鋅,分析了回收(shou)的鑄錠證明了它們是(shi)(shi)幾乎純凈的金屬。
在(zai)1668年,佛蘭(lan)德(de)的(de)冶金家(jia)P.Moras de Respour,從氧化(hua)鋅(xin)中提(ti)取(qu)了金屬鋅(xin),但歐(ou)洲認為(wei)鋅(xin)是由德(de)國化(hua)學家(jia)Andreas Marggraf在(zai)1746年發現(xian)的(de),而且的(de)確(que)是他第一(yi)個確(que)認了其是一(yi)種新的(de)金屬。
鋅(xin)(xin)(xin)也是人類自遠古(gu)(gu)時就知(zhi)道其(qi)化合物的元(yuan)素之一(yi)。鋅(xin)(xin)(xin)礦石和銅熔化制得(de)合金(jin)——黃銅,早為(wei)古(gu)(gu)代(dai)人們所(suo)利用。但金(jin)屬狀(zhuang)(zhuang)鋅(xin)(xin)(xin)的獲得(de)比銅、鐵、錫、鉛要晚得(de)多,一(yi)般認為(wei)這是由于碳(tan)和鋅(xin)(xin)(xin)礦共熱(re)時,溫度很快高達1000℃以上,而金(jin)屬鋅(xin)(xin)(xin)的沸點是906℃,故鋅(xin)(xin)(xin)即成為(wei)蒸氣(qi)(qi)狀(zhuang)(zhuang)態,隨(sui)煙散失,不易為(wei)古(gu)(gu)代(dai)人們所(suo)察覺,只有當人們掌握了冷凝氣(qi)(qi)體的方法后(hou),單質鋅(xin)(xin)(xin)才(cai)有可能被取得(de)。
世界上最早發現(xian)并使用鋅(xin)(xin)(xin)(xin)的(de)是中國(guo),在10~11世紀(ji)中國(guo)是首先大(da)規模生產鋅(xin)(xin)(xin)(xin)的(de)國(guo)家。明朝末年宋應星所著的(de)《天工開(kai)(kai)物(wu)》一書(shu)中有世界上最早的(de)關(guan)于煉(lian)鋅(xin)(xin)(xin)(xin)技術的(de)記載。1750~1850年人們已開(kai)(kai)始用氧化(hua)鋅(xin)(xin)(xin)(xin)和硫(liu)化(hua)鋅(xin)(xin)(xin)(xin)來治病。
1869年(nian)(nian)Raulin發現鋅(xin)存在(zai)于(yu)(yu)生(sheng)活機(ji)(ji)體中,并為生(sheng)活機(ji)(ji)體所必需(xu)。1963年(nian)(nian)報告了人體的(de)鋅(xin)缺(que)乏病,于(yu)(yu)是鋅(xin)開始(shi)列為人體必需(xu)營養(yang)素。鋅(xin)的(de)生(sheng)產過程非(fei)常簡單(dan),將爐甘(gan)石(shi)(即菱鋅(xin)礦石(shi))裝滿(man)在(zai)陶罐(guan)內密(mi)封,堆成(cheng)錐形,罐(guan)與罐(guan)之(zhi)間(jian)的(de)空(kong)隙(xi)用木炭填充,將罐(guan)打破,就可以得到(dao)提(ti)取出來(lai)的(de)金屬鋅(xin)錠。
另外,我國化學(xue)史(shi)和分(fen)析(xi)化學(xue)研究的(de)開(kai)拓(tuo)者王(wang)鏈(1888—1966)在1956年(nian)分(fen)析(xi)了唐、隋、明(ming)、清等(deng)古錢后,發(fa)現宋朝的(de)紹圣(sheng)錢中(zhong)含鋅量(liang)高。鋅的(de)實際應(ying)用可能比《天工(gong)開(kai)物》成書年(nian)代還早(zao)。
鋅(xin)(xin)(xin)(xin)(xin)(xin)的單一(yi)鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)較(jiao)少,鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)資(zi)源(yuan)(yuan)(yuan)(yuan)主要(yao)是鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)。中國銅鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)資(zi)源(yuan)(yuan)(yuan)(yuan)比較(jiao)豐(feng)富(fu),全(quan)(quan)國除上(shang)海、天津、香港(gang)外,均(jun)有(you)(you)鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)產出(chu)。產地(di)有(you)(you)700多(duo)處,保有(you)(you)鉛(qian)(qian)(qian)總儲量(liang)(liang)3572萬(wan)噸(dun)(dun),居(ju)世界第4位(wei)(wei);鋅(xin)(xin)(xin)(xin)(xin)(xin)儲量(liang)(liang)9384萬(wan)噸(dun)(dun),居(ju)世界第4位(wei)(wei)。從省際比較(jiao)來看,云(yun)(yun)南鉛(qian)(qian)(qian)儲量(liang)(liang)占全(quan)(quan)國總儲量(liang)(liang)17%,位(wei)(wei)居(ju)全(quan)(quan)國榜首。廣(guang)(guang)東、內(nei)(nei)蒙古(gu)、甘肅、江(jiang)西(xi)、湖南、四川次之,探(tan)明儲量(liang)(liang)均(jun)在200萬(wan)噸(dun)(dun)以(yi)(yi)(yi)(yi)上(shang)。全(quan)(quan)國鋅(xin)(xin)(xin)(xin)(xin)(xin)儲量(liang)(liang)以(yi)(yi)(yi)(yi)云(yun)(yun)南為最,占全(quan)(quan)國21.8%;內(nei)(nei)蒙古(gu)次之,占13.5%;其他如甘肅、廣(guang)(guang)東、廣(guang)(guang)西(xi)、湖南等(deng)省(區(qu)(qu)(qu))的鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)資(zi)源(yuan)(yuan)(yuan)(yuan)也較(jiao)豐(feng)富(fu),均(jun)在600萬(wan)噸(dun)(dun)以(yi)(yi)(yi)(yi)上(shang)。鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)主要(yao)分布(bu)在滇西(xi)蘭坪地(di)區(qu)(qu)(qu)、滇川地(di)區(qu)(qu)(qu)、南嶺地(di)區(qu)(qu)(qu)、秦嶺-祁連山(shan)(shan)地(di)區(qu)(qu)(qu)以(yi)(yi)(yi)(yi)及內(nei)(nei)蒙古(gu)狼山(shan)(shan)-渣爾泰地(di)區(qu)(qu)(qu)。從礦(kuang)(kuang)(kuang)床類型來看,有(you)(you)與花崗巖(yan)(yan)有(you)(you)關的花崗巖(yan)(yan)型(廣(guang)(guang)東連平)、夕卡巖(yan)(yan)型(湖南水口(kou)山(shan)(shan))、斑巖(yan)(yan)型(云(yun)(yun)南姚安)礦(kuang)(kuang)(kuang)床,有(you)(you)與海相(xiang)火山(shan)(shan)有(you)(you)關的礦(kuang)(kuang)(kuang)床(青海錫鐵山(shan)(shan)),有(you)(you)產于陸相(xiang)火山(shan)(shan)巖(yan)(yan)中的礦(kuang)(kuang)(kuang)床(江(jiang)西(xi)冷(leng)水坑和(he)浙江(jiang)五(wu)部鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)),有(you)(you)產于海相(xiang)碳酸鹽(廣(guang)(guang)東凡口(kou))、泥巖(yan)(yan)-碎屑巖(yan)(yan)系中的鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(甘肅西(xi)成(cheng)鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)),有(you)(you)產于海相(xiang)或陸相(xiang)砂(sha)巖(yan)(yan)和(he)礫(li)巖(yan)(yan)中的鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(云(yun)(yun)南金頂(ding))等(deng)。鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)成(cheng)礦(kuang)(kuang)(kuang)時代從太古(gu)宙到新生代皆有(you)(you),以(yi)(yi)(yi)(yi)古(gu)生代鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)(xin)(xin)(xin)礦(kuang)(kuang)(kuang)資(zi)源(yuan)(yuan)(yuan)(yuan)力量(liang)(liang)豐(feng)富(fu)。
金融危(wei)機之后各(ge)國紛紛推出救市計(ji)劃,各(ge)大央行也(ye)陸續釋放(fang)流(liu)動(dong)性(xing)(xing),美國持續量寬、中國推出四萬億以(yi)促使經濟復蘇,充(chong)裕的流(liu)動(dong)性(xing)(xing)使得金融屬性(xing)(xing)占據(ju)主(zhu)要地(di)位推升2010年(nian)鋅(xin)價(jia)(jia)不斷走(zou)高。《2013-2017年(nian)中國鋅(xin)行業競爭態(tai)勢(shi)及投(tou)資發(fa)展(zhan)預(yu)測報告》,全球經濟趨于穩定(ding)(ding),美國緩慢復蘇,市場上(shang)關于QE3退出的預(yu)期(qi)逐漸增(zeng)強,倘(tang)若(ruo)美國經濟政策發(fa)生改變,美元將(jiang)會(hui)走(zou)強,鋅(xin)價(jia)(jia)受其(qi)影響較大。但同時(shi)值得注意(yi)的是(shi),經濟復蘇也(ye)在一定(ding)(ding)程度上(shang)帶來需求恢復,兩種屬性(xing)(xing)的博(bo)弈將(jiang)共同決定(ding)(ding)鋅(xin)價(jia)(jia)未來走(zou)勢(shi)。
美(mei)國(guo)(guo)金融危機后通過持續寬(kuan)松(song)的(de)貨(huo)幣(bi)政策促進經(jing)濟(ji)和(he)就(jiu)業增(zeng)長(chang),盡(jin)管貨(huo)幣(bi)寬(kuan)松(song)政策的(de)邊際效用遞(di)減,但可以看到(dao)的(de)是,美(mei)國(guo)(guo)GDP增(zeng)速(su)的(de)低速(su)增(zeng)長(chang)和(he)就(jiu)業市場(chang)的(de)緩慢好轉(zhuan)表明(ming),美(mei)國(guo)(guo)經(jing)濟(ji)正在弱勢(shi)復蘇。美(mei)國(guo)(guo)經(jing)濟(ji)復蘇以及房地產市場(chang)的(de)回暖帶動(dong)對(dui)鋅的(de)需求上升(sheng),但這種弱勢(shi)復蘇態勢(shi)仍比較脆弱,對(dui)鋅需求帶動(dong)也有限。
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)界上鋅(xin)的(de)全部消(xiao)費(fei)中大(da)約(yue)(yue)(yue)有一半(ban)用于(yu)鍍鋅(xin),約(yue)(yue)(yue)10%用于(yu)黃銅和青銅,不到(dao)10%用于(yu)鋅(xin)基合(he)金,約(yue)(yue)(yue)7.5%用于(yu)化學制品(pin),約(yue)(yue)(yue)13%用于(yu)制造干電池,以鋅(xin)餅、鋅(xin)板形(xing)式出(chu)現。國際鉛鋅(xin)研(yan)究組預(yu)測,2004年全球鋅(xin)消(xiao)費(fei)量會比2003年的(de)985萬t增(zeng)長(chang)4.8%,2005年將再增(zeng)長(chang)4.3%,預(yu)計2005年中國將占世(shi)界鋅(xin)消(xiao)費(fei)總量的(de)四分(fen)之一,它的(de)消(xiao)費(fei)增(zeng)長(chang)的(de)部分(fen)原因是鍍鋅(xin)鋼用量的(de)增(zeng)長(chang)。相比之下,美國可(ke)能只占全球鋅(xin)需求的(de)十分(fen)之一。
(1)鍍鋅(xin)(xin)(xin)(xin)有(you)優良的(de)(de)抗大(da)氣腐蝕性能(neng),在常溫下表(biao)(biao)面易生成一層保護膜(mo),因此鋅(xin)(xin)(xin)(xin)最大(da)的(de)(de)用(yong)(yong)(yong)(yong)(yong)(yong)途是(shi)(shi)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)鍍鋅(xin)(xin)(xin)(xin)工業。被主要(yao)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)鋼(gang)(gang)材(cai)和鋼(gang)(gang)結構件(jian)的(de)(de)表(biao)(biao)面鍍層(如鍍鋅(xin)(xin)(xin)(xin)板(ban)),廣(guang)泛用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)汽(qi)車、建筑、船舶(bo)、輕工等行業。21世紀后西方國(guo)家開(kai)始嘗(chang)試直接用(yong)(yong)(yong)(yong)(yong)(yong)鋅(xin)(xin)(xin)(xin)合金板(ban)做屋頂覆蓋材(cai)料,其使(shi)用(yong)(yong)(yong)(yong)(yong)(yong)年(nian)限可長達120-140年(nian),而(er)且可回(hui)收再用(yong)(yong)(yong)(yong)(yong)(yong),而(er)用(yong)(yong)(yong)(yong)(yong)(yong)鍍鋅(xin)(xin)(xin)(xin)鐵(tie)板(ban)作屋頂材(cai)料的(de)(de)使(shi)用(yong)(yong)(yong)(yong)(yong)(yong)壽命(ming)一般為5-10年(nian)。21世紀后,鋼(gang)(gang)帶熱(re)浸鍍鋅(xin)(xin)(xin)(xin)量有(you)顯著增長。電鍍鋅(xin)(xin)(xin)(xin)也有(you)使(shi)用(yong)(yong)(yong)(yong)(yong)(yong),但該法一般用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)較薄(bo)的(de)(de)鍍層和不(bu)同(tong)的(de)(de)表(biao)(biao)面光潔度(du)。使(shi)用(yong)(yong)(yong)(yong)(yong)(yong)含鋅(xin)(xin)(xin)(xin)粉(fen)的(de)(de)涂料是(shi)(shi)涂層的(de)(de)另一種方法;對于(yu)與(yu)水(shui)連(lian)(lian)續(xu)接觸(chu)的(de)(de)物體,如用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)船舶(bo)、橋梁(liang)和近海(hai)油氣井架的(de)(de)大(da)的(de)(de)鋼(gang)(gang)構件(jian),只須和大(da)的(de)(de)鋅(xin)(xin)(xin)(xin)塊(kuai)連(lian)(lian)接,便可得到(dao)保護,不(bu)過鋅(xin)(xin)(xin)(xin)塊(kuai)要(yao)定期(qi)更換。
(2)鋅(xin)合金用(yong)(yong)(yong)于(yu)汽車制(zhi)造和機械行業。鋅(xin)具(ju)(ju)(ju)有(you)適用(yong)(yong)(yong)的機械性(xing)能(neng)。鋅(xin)本(ben)身(shen)的強度(du)(du)和硬度(du)(du)不(bu)高,但加(jia)(jia)入鋁(lv)、銅(tong)(tong)等(deng)合金元(yuan)素(su)后,其強度(du)(du)和硬度(du)(du)均大為提(ti)(ti)高,猶其是(shi)鋅(xin)銅(tong)(tong)鈦合金的出現(xian),其綜合機械性(xing)能(neng)已接近或(huo)達到鋁(lv)合金、黃銅(tong)(tong)、灰鑄鐵的水(shui)平,其抗蠕變(bian)性(xing)能(neng)也大幅度(du)(du)被(bei)提(ti)(ti)高。因此,鋅(xin)銅(tong)(tong)鈦合金已被(bei)廣泛應用(yong)(yong)(yong)于(yu)小五金生(sheng)產中(zhong)。主要(yao)為壓(ya)鑄件,用(yong)(yong)(yong)于(yu)汽車、建筑、部分電氣設備、家用(yong)(yong)(yong)電器、玩具(ju)(ju)(ju)等(deng)的零(ling)部件生(sheng)產。許多鋅(xin)合金的加(jia)(jia)工(gong)性(xing)能(neng)都比較優良,道次加(jia)(jia)工(gong)率(lv)可達60%-80%。中(zhong)壓(ya)性(xing)能(neng)優越,可進(jin)行深拉延(yan),并具(ju)(ju)(ju)有(you)自潤(run)滑性(xing),延(yan)長了模具(ju)(ju)(ju)壽(shou)命,可用(yong)(yong)(yong)釬焊(han)或(huo)電阻焊(han)或(huo)電弧(hu)焊(han)(需在(zai)氦氣中(zhong))進(jin)行焊(han)接,表面(mian)可進(jin)行電鍍(du)、涂(tu)漆處理,切削加(jia)(jia)工(gong)性(xing)能(neng)良好(hao)。在(zai)一(yi)定條件下具(ju)(ju)(ju)有(you)優越性(xing)。一(yi)般(ban)用(yong)(yong)(yong)于(yu)機械制(zhi)造業。含少量鉛(qian)鎘等(deng)元(yuan)素(su)的鋅(xin)板可制(zhi)成鋅(xin)錳干(gan)電池負極、印花鋅(xin)板、有(you)粉腐蝕照相制(zhi)板和膠印印刷板等(deng)。
(3)鋅可(ke)以用來(lai)制作電池。例如:鋅錳(meng)電池以及鋅空氣蓄電池。
鋅(xin)(xin)錳(meng)電(dian)(dian)池:鋅(xin)(xin)作為(wei)負(fu)極(ji)活性物(wu)質,兼作電(dian)(dian)池的(de)(de)(de)(de)(de)容器和(he)負(fu)極(ji)引(yin)電(dian)(dian)體,是決定電(dian)(dian)池貯存(cun)性能(neng)的(de)(de)(de)(de)(de)主要材料。在(zai)鋅(xin)(xin)片中含(han)有(you)少(shao)量的(de)(de)(de)(de)(de)鎘(ge)和(he)鉛(qian)。鎘(ge)能(neng)增強(qiang)鋅(xin)(xin)的(de)(de)(de)(de)(de)強(qiang)度,鉛(qian)能(neng)改進(jin)鋅(xin)(xin)的(de)(de)(de)(de)(de)延展加工(gong)性能(neng)。鎘(ge)與鉛(qian)均(jun)能(neng)提高氫在(zai)鋅(xin)(xin)電(dian)(dian)極(ji)上的(de)(de)(de)(de)(de)過電(dian)(dian)位,減少(shao)鋅(xin)(xin)電(dian)(dian)極(ji)的(de)(de)(de)(de)(de)自放電(dian)(dian),減緩鋅(xin)(xin)片的(de)(de)(de)(de)(de)腐蝕和(he)氫氣的(de)(de)(de)(de)(de)釋放。鋅(xin)(xin)片中若含(han)有(you)Cu、Fe、Ni等,將(jiang)降(jiang)低H2在(zai)鋅(xin)(xin)電(dian)(dian)極(ji)上析出(chu)的(de)(de)(de)(de)(de)過電(dian)(dian)位,加速電(dian)(dian)池在(zai)貯存(cun)過程(cheng)中的(de)(de)(de)(de)(de)自放電(dian)(dian),因此這些有(you)害雜質必(bi)須嚴格控制(zhi)。
鋅(xin)空氣蓄電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi):鋅(xin)空氣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)又稱鋅(xin)氧(yang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi),是金屬(shu)空氣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)一種(zhong)。鋅(xin)空氣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)比(bi)能(neng)理論值是1350W·h/kg,最(zui)新(xin)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)比(bi)能(neng)量(liang)(liang)已(yi)達到(dao)了(le)(le)230Wh/kg,幾乎是鉛酸(suan)(suan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)8倍(bei)(bei)。可見鋅(xin)空氣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)發展空間非常大。鋅(xin)空氣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)一般采取抽換(huan)鋅(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)辦(ban)法(fa)進行“機械(xie)式(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)”。更換(huan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)的(de)時(shi)間在(zai)(zai)幾分(fen)(fen)鐘即(ji)可完成(cheng)。換(huan)上新(xin)的(de)鋅(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji),“充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)”時(shi)間極(ji)(ji)(ji)短(duan),非常方便(bian)。如此(ci)種(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)得到(dao)發展,省(sheng)去了(le)(le)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)站等社會保障設施的(de)興建。鋅(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)可在(zai)(zai)超(chao)市、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)經營(ying)點、汽(qi)配商店等購買,對普(pu)及此(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動車(che)十分(fen)(fen)有利。這種(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)具(ju)有體積小,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷容(rong)量(liang)(liang)大,質量(liang)(liang)小,能(neng)在(zai)(zai)寬廣的(de)溫度(du)范圍內正常工作,且(qie)無腐蝕,工作安全可靠。只是鋅(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解還原過程中,比(bi)較耗能(neng),每噸氧(yang)化鋅(xin)還原成(cheng)鋅(xin)需要消耗2500度(du)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),所以用在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動汽(qi)車(che)上,成(cheng)本(ben)較高。試驗(yan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷容(rong)量(liang)(liang)僅是鉛酸(suan)(suan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)5倍(bei)(bei),不甚理想。但5倍(bei)(bei)于鉛酸(suan)(suan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷量(liang)(liang)已(yi)引起了(le)(le)世人的(de)關注,美國、墨西哥,新(xin)加坡(po)及一些歐洲(zhou)國家都已(yi)在(zai)(zai)郵政車(che)、公共汽(qi)車(che)、摩托車(che)上進行試用,也是一極(ji)(ji)(ji)有前(qian)途的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動車(che)用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)。
此外,鋅(xin)(xin)(xin)(xin)具(ju)有(you)(you)良好的(de)抗(kang)電(dian)磁場性(xing)能(neng)(neng)。鋅(xin)(xin)(xin)(xin)的(de)導電(dian)率是(shi)(shi)標準電(dian)工銅的(de)29%,鋅(xin)(xin)(xin)(xin)板(ban)是(shi)(shi)一種非常有(you)(you)效的(de)屏蔽(bi)材料,同(tong)時由于(yu)(yu)鋅(xin)(xin)(xin)(xin)是(shi)(shi)非磁性(xing)的(de),適(shi)合做儀(yi)器儀(yi)表(biao)(biao)零件的(de)材料及(ji)(ji)儀(yi)表(biao)(biao)殼(ke)體及(ji)(ji)錢幣,同(tong)時,鋅(xin)(xin)(xin)(xin)自身及(ji)(ji)與其他金屬碰撞(zhuang)不會發生火花,適(shi)合作(zuo)井下防(fang)爆器材。廣(guang)泛(fan)用(yong)(yong)于(yu)(yu)橡膠(jiao)(jiao)、涂(tu)料、搪瓷(ci)、醫(yi)藥(yao)、印刷、纖維(wei)等(deng)工業。鋅(xin)(xin)(xin)(xin)具(ju)有(you)(you)適(shi)宜的(de)化(hua)學性(xing)能(neng)(neng)。鋅(xin)(xin)(xin)(xin)可(ke)與NH4CI發生作(zuo)用(yong)(yong),放(fang)出(chu)H+正(zheng)離(li)子(zi)。鋅(xin)(xin)(xin)(xin)-二(er)氧(yang)化(hua)錳電(dian)池(chi)正(zheng)是(shi)(shi)利用(yong)(yong)鋅(xin)(xin)(xin)(xin)的(de)這個特點,用(yong)(yong)鋅(xin)(xin)(xin)(xin)合金做電(dian)池(chi)的(de)外殼(ke),既是(shi)(shi)電(dian)池(chi)電(dian)解質的(de)容器,又參加電(dian)池(chi)反應構成電(dian)池(chi)的(de)陽(yang)極。它(ta)的(de)這一性(xing)能(neng)(neng)也(ye)被廣(guang)泛(fan)地應用(yong)(yong)于(yu)(yu)醫(yi)藥(yao)行(xing)業。鋅(xin)(xin)(xin)(xin)與酸或(huo)強堿都能(neng)(neng)發生反應,放(fang)出(chu)氫氣(qi)。鋅(xin)(xin)(xin)(xin)肥(硫酸鋅(xin)(xin)(xin)(xin)、氯化(hua)鋅(xin)(xin)(xin)(xin))有(you)(you)促(cu)進(jin)植物(wu)細胞呼吸、碳水化(hua)合物(wu)的(de)代謝等(deng)作(zuo)用(yong)(yong)。鋅(xin)(xin)(xin)(xin)粉、鋅(xin)(xin)(xin)(xin)鋇白、鋅(xin)(xin)(xin)(xin)鉻(ge)黃可(ke)作(zuo)顏料。氧(yang)化(hua)鋅(xin)(xin)(xin)(xin)還可(ke)用(yong)(yong)于(yu)(yu)醫(yi)藥(yao)、橡膠(jiao)(jiao)、油漆等(deng)工業。
中(zhong)國(guo)鉛(qian)(qian)鋅業生產布局,依據(ju)鉛(qian)(qian)鋅礦產地(di)的(de)分布和(he)(he)建設條(tiao)件,經40多年來的(de)發展、建設,現(xian)已形成(cheng)東北、湖南、兩廣(guang)、滇川(chuan)、西北等(deng)五大鉛(qian)(qian)鋅采選冶和(he)(he)加工配套(tao)的(de)生產基地(di),其鉛(qian)(qian)產量(liang)占全國(guo)總(zong)產量(liang)的(de)85%以上(shang),鋅產量(liang)占全國(guo)總(zong)產量(liang)的(de)95%。
1.東北鉛(qian)(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)(chan)基(ji)(ji)地(di)(di)。東北地(di)(di)區是(shi)(shi)我(wo)國(guo)(guo)(guo)開發較早的鉛(qian)(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)(chan)基(ji)(ji)地(di)(di)之(zhi)一。早在50年代初期,其鉛(qian)(qian)(qian)產(chan)(chan)量(liang)占全國(guo)(guo)(guo)鉛(qian)(qian)(qian)產(chan)(chan)量(liang)的80%以上(shang),在中國(guo)(guo)(guo)鉛(qian)(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)(chan)居于重要地(di)(di)位(wei)。東北基(ji)(ji)地(di)(di)以七礦(kuang)(kuang)(kuang)兩(liang)廠(chang)(chang)為主(zhu),即青城(cheng)子鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)(kuang)、八家子鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)(kuang)、柴河鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)(kuang)(現已閉坑)、桓(huan)仁銅鋅(xin)(xin)礦(kuang)(kuang)(kuang)、紅透山銅鋅(xin)(xin)礦(kuang)(kuang)(kuang)、西林(lin)鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)(kuang)、天(tian)寶山鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)(kuang)和沈陽冶煉廠(chang)(chang)、葫蘆島鋅(xin)(xin)廠(chang)(chang)。七礦(kuang)(kuang)(kuang)兩(liang)廠(chang)(chang)不僅是(shi)(shi)東北鉛(qian)(qian)(qian)鋅(xin)(xin)生(sheng)產(chan)(chan)基(ji)(ji)地(di)(di)的支柱廠(chang)(chang)礦(kuang)(kuang)(kuang),也是(shi)(shi)培養造(zao)就科技人才(cai)(cai)的基(ji)(ji)地(di)(di)。六(liu)七十年代曾向全國(guo)(guo)(guo)新建的鉛(qian)(qian)(qian)鋅(xin)(xin)企業(ye)輸送大批具有(you)實踐經驗的科技和管理人才(cai)(cai)以及生(sheng)產(chan)(chan)技術(shu)工(gong)人,為中國(guo)(guo)(guo)鉛(qian)(qian)(qian)鋅(xin)(xin)業(ye)的發展做出(chu)了積極(ji)貢獻。
2.湖南(nan)鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)生產(chan)(chan)基地(di)(di)。湖南(nan)鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)產(chan)(chan)資(zi)源豐富,而且富礦(kuang)多,大部(bu)分礦(kuang)產(chan)(chan)地(di)(di)可開發利用。該基地(di)(di)鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)廠礦(kuang)是五(wu)六十(shi)年代建成(cheng)的,由水(shui)口山礦(kuang)務(wu)局、桃林鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)、黃沙坪鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)、東坡鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦(kuang)和株(zhu)洲冶(ye)煉廠等組成(cheng)的湖南(nan)鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)生產(chan)(chan)基地(di)(di),是全(quan)國自產(chan)(chan)原料的全(quan)國最大的鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)生產(chan)(chan)基地(di)(di),在全(quan)國產(chan)(chan)量(liang)占有重要地(di)(di)位(wei)。
3.兩廣(guang)鉛(qian)(qian)(qian)鋅(xin)(xin)生產(chan)基地(di)。廣(guang)東(dong)、廣(guang)西兩省區的鉛(qian)(qian)(qian)鋅(xin)(xin)資(zi)源豐(feng)富(fu),兩省區是(shi)70年代(dai)形成的我國大(da)(da)(da)型鉛(qian)(qian)(qian)鋅(xin)(xin)生產(chan)基地(di)之一。廣(guang)東(dong)以凡口鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)和(he)韶關冶(ye)煉廠(chang)為主,其次是(shi)丙村鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)、昌化鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)、大(da)(da)(da)尖山鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)。廣(guang)西有(you)泗頂鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)、大(da)(da)(da)新鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)、河三(san)鉛(qian)(qian)(qian)鋅(xin)(xin)礦(kuang)(kuang)、柳州(zhou)鋅(xin)(xin)品(pin)廠(chang)和(he)大(da)(da)(da)廠(chang)礦(kuang)(kuang)務局(ju)等(deng)。
4.滇川(chuan)鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)生(sheng)產(chan)基地。云南鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦產(chan)資源十(shi)分豐富,鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)保有儲量(liang)均居全國之首。該(gai)基地鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)企業也(ye)是五(wu)六十(shi)年(nian)代建成的,主(zhu)要(yao)是會(hui)澤鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦、瀾滄老(lao)廠鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦和(he)昆明冶(ye)煉(lian)廠、個(ge)舊雞街冶(ye)煉(lian)廠。云南鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦產(chan)資源具有廣闊(kuo)的開發前景,90年(nian)代開始興(xing)建超大(da)型鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦床(chuang)金頂礦山。四川(chuan)有會(hui)東鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦、會(hui)理鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)礦兩(liang)個(ge)主(zhu)要(yao)礦山以(yi)(yi)及一批中小型礦山,21世紀以(yi)(yi)來鉛(qian)(qian)(qian)鋅(xin)(xin)(xin)精礦產(chan)量(liang)猛增。
5.西北(bei)鉛(qian)鋅(xin)(xin)(xin)生產(chan)(chan)(chan)基地。西北(bei)地區(qu)鉛(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)產(chan)(chan)(chan)資(zi)源(yuan)也很(hen)豐富,主(zhu)要(yao)分布在(zai)甘陜(shan)青(qing)三省,而且(qie)西成礦(kuang)(kuang)(kuang)(kuang)帶(dai)經(jing)勘(kan)查儲量又有(you)大(da)幅度的(de)增長,資(zi)源(yuan)前景(jing)十分可觀。該基地鉛(qian)鋅(xin)(xin)(xin)生產(chan)(chan)(chan)以白銀(yin)有(you)色金屬(shu)公司為(wei)主(zhu),有(you)白銀(yin)廠(chang)(chang)小鐵(tie)山(shan)鉛(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)、第三冶(ye)煉廠(chang)(chang)和(he)西北(bei)鉛(qian)鋅(xin)(xin)(xin)冶(ye)煉廠(chang)(chang),陜(shan)西有(you)鉛(qian)硐山(shan)鉛(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)、二(er)里河鉛(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)、銀(yin)洞梁鉛(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)等(deng)和(he)青(qing)海錫鐵(tie)山(shan)礦(kuang)(kuang)(kuang)(kuang)務局(ju)。西北(bei)鉛(qian)鋅(xin)(xin)(xin)產(chan)(chan)(chan)量較(jiao)少,但開發前景(jing)可觀。一(yi)是(shi)有(you)豐富的(de)鉛(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)產(chan)(chan)(chan)資(zi)源(yuan),位于甘陜(shan)交(jiao)界的(de)西成-鳳(feng)太礦(kuang)(kuang)(kuang)(kuang)帶(dai),經(jing)近20余年勘(kan)查出10多(duo)個大(da)中型(xing)(xing)鉛(qian)鋅(xin)(xin)(xin)銀(yin)金礦(kuang)(kuang)(kuang)(kuang)床,其中廠(chang)(chang)壩-李家溝鉛(qian)鋅(xin)(xin)(xin)達(da)到(dao)超大(da)型(xing)(xing)規(gui)模,銀(yin)達(da)到(dao)大(da)型(xing)(xing)。二(er)是(shi)廠(chang)(chang)壩正在(zai)抓緊建設一(yi)座大(da)型(xing)(xing)礦(kuang)(kuang)(kuang)(kuang)山(shan),將成為(wei)西北(bei)冶(ye)煉廠(chang)(chang)主(zhu)要(yao)礦(kuang)(kuang)(kuang)(kuang)物原料供給基地,是(shi)全國大(da)型(xing)(xing)鉛(qian)鋅(xin)(xin)(xin)礦(kuang)(kuang)(kuang)(kuang)山(shan)之一(yi)。
除上述五大(da)鉛(qian)鋅(xin)(xin)生產基(ji)地外,內(nei)蒙(meng)(meng)古(gu)(gu)、江(jiang)西(xi)、貴(gui)州(zhou)等省(sheng)區也建設了一批中(zhong)小型礦(kuang)山。其中(zhong)內(nei)蒙(meng)(meng)古(gu)(gu)梧(wu)桐花鉛(qian)鋅(xin)(xin)礦(kuang)、白(bai)音諾鉛(qian)鋅(xin)(xin)礦(kuang)、翁牛(niu)特旗硐(dong)子鉛(qian)鋅(xin)(xin)礦(kuang)等礦(kuang)山。內(nei)蒙(meng)(meng)古(gu)(gu)是全國(guo)生產鉛(qian)鋅(xin)(xin)精礦(kuang)主要省(sheng)區之一,開(kai)發前景巨大(da)。江(jiang)西(xi)有銀山鉛(qian)鋅(xin)(xin)礦(kuang)等。貴(gui)州(zhou)有赫章鉛(qian)鋅(xin)(xin)礦(kuang)、杉(shan)樹林鉛(qian)鋅(xin)(xin)礦(kuang)等。
侵入(ru)途徑:吸入(ru)、食(shi)入(ru)。
吸入會引起口(kou)渴、干咳、頭(tou)痛、頭(tou)暈(yun)、高熱、寒戰(zhan)等。粉塵對眼(yan)有(you)刺(ci)激性(xing)。口(kou)服(fu)刺(ci)激胃(wei)腸道(dao)。長期反復接觸對皮膚有(you)刺(ci)激性(xing)。
1.貯于陰涼干燥處(chu),遠離(li)火種、熱源。
2.與氧化(hua)劑、胺類、硫、磷、酸堿類分儲(chu)。
3.滅(mie)火:干(gan)粉、干(gan)砂(sha)。禁(jin)用水和泡沫。
維持人體正常食欲
缺(que)鋅會(hui)導致味覺下(xia)降(jiang),出現(xian)厭食、偏食甚至(zhi)異(yi)食。
增強人體免疫力
鋅(xin)元素(su)是免疫器官胸腺發育的營養素(su),只有鋅(xin)量充足才能(neng)有效保證胸腺發育,正常分化T淋巴細胞,促(cu)進(jin)細胞免疫功能(neng)。
鋅有幫助(zhu)生(sheng)長(chang)發(fa)育(yu)、智力(li)發(fa)育(yu)、提(ti)高免疫(yi)力(li)的作用(yong),缺乏鋅會對我們的身體(ti),特(te)別是(shi)生(sheng)長(chang)發(fa)育(yu)造成(cheng)嚴重影響,所以,補充足(zu)夠的鋅是(shi)生(sheng)長(chang)發(fa)育(yu),智力(li)發(fa)育(yu)必(bi)須的。平時(shi)除了(le)飲(yin)食要均衡外,別忘了(le)適當補充營養。
兒童
味(wei)覺障礙:厭食、偏食或異食;
皮膚疾患:易(yi)患口腔潰瘍,受(shou)損傷口不(bu)易(yi)愈合,青春期痤瘡等;
生長發育不良:身材矮小、瘦弱;
免(mian)疫力下降,經常(chang)感冒(mao)、發(fa)燒;
孕婦
妊娠反應加(jia)重:嗜酸,嘔吐加(jia)重
宮內胎(tai)兒(er)發育(yu)遲緩:導(dao)致早產兒(er)、低體重兒(er)
分娩(mian)合(he)并癥增多:產程(cheng)延長、流產
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(mu) 21.5 35