金属矿山
金屬礦山
금속광산
METAL MINE
2015年
2期
77-81
,共5页
高莹%韩跃新%陈晓龙%唐志东
高瑩%韓躍新%陳曉龍%唐誌東
고형%한약신%진효룡%당지동
硅藻土%分散剂%三聚磷酸钠%焙烧%酸浸
硅藻土%分散劑%三聚燐痠鈉%焙燒%痠浸
규조토%분산제%삼취린산납%배소%산침
Diatomite%Dispersant%Sodium tripolyphosphate%Roast%Acid leaching
吉林临江低品位硅藻土属高烧失三级硅藻土,脉石矿物主要为石英和钠长石。为提高该硅藻土纯度,对其进行了浮选分散剂选择试验,并对最佳浮选条件下所得浮选精矿进行了焙烧—酸浸试验。结果表明,在矿浆温度为40℃、pH为9、十二胺为捕收剂条件下浮选,三聚磷酸钠作为分散剂时浮选指标最佳。以三聚磷酸钠作为分散剂、十二胺为捕收剂,经1粗2精浮选获得了SiO2品位为79.38%、Al2 O3品位为5.04%的硅藻土浮选精矿。该浮选精矿在600℃条件下焙烧1 h后,在室温条件下采用20%的硫酸浸出1.5 h,获得了SiO2品位为89.57%、Al2 O3品位为4.77%、Fe2 O3品位为0.71%的硅藻土精矿,达到了一级土的标准。
吉林臨江低品位硅藻土屬高燒失三級硅藻土,脈石礦物主要為石英和鈉長石。為提高該硅藻土純度,對其進行瞭浮選分散劑選擇試驗,併對最佳浮選條件下所得浮選精礦進行瞭焙燒—痠浸試驗。結果錶明,在礦漿溫度為40℃、pH為9、十二胺為捕收劑條件下浮選,三聚燐痠鈉作為分散劑時浮選指標最佳。以三聚燐痠鈉作為分散劑、十二胺為捕收劑,經1粗2精浮選穫得瞭SiO2品位為79.38%、Al2 O3品位為5.04%的硅藻土浮選精礦。該浮選精礦在600℃條件下焙燒1 h後,在室溫條件下採用20%的硫痠浸齣1.5 h,穫得瞭SiO2品位為89.57%、Al2 O3品位為4.77%、Fe2 O3品位為0.71%的硅藻土精礦,達到瞭一級土的標準。
길림림강저품위규조토속고소실삼급규조토,맥석광물주요위석영화납장석。위제고해규조토순도,대기진행료부선분산제선택시험,병대최가부선조건하소득부선정광진행료배소—산침시험。결과표명,재광장온도위40℃、pH위9、십이알위포수제조건하부선,삼취린산납작위분산제시부선지표최가。이삼취린산납작위분산제、십이알위포수제,경1조2정부선획득료SiO2품위위79.38%、Al2 O3품위위5.04%적규조토부선정광。해부선정광재600℃조건하배소1 h후,재실온조건하채용20%적류산침출1.5 h,획득료SiO2품위위89.57%、Al2 O3품위위4.77%、Fe2 O3품위위0.71%적규조토정광,체도료일급토적표준。
The low-grade diatomite of Linjiang County,Jilin Province,is grade-three diatomite with high burning loss,and gangue minerals are mainly quartz and albite. Dispersant selection tests ate carried out in order to purification the diatomite,as well as roasting-acid leaching tests on the flotation concentrate. The results showed that the flotation index is optimum when u-sing sodium tripolyphosphate(STPP) as dispersant under pH 9,slurry is 40℃ and lurylamine as collector. By STPP as disper-sant solvent,through one roughing and two cleaning flotation operation,concentrate with 79. 38% SiO2,5. 04%Al2O3 is ob-tained. And the concentrate of flotation was roasted for 1 h at temperature of 600℃,and leaching for 1. 5 h using 20% sulfuric acid as solvent. Finally,diatomaceous concentrate with 89. 57% SiO2,4. 77% Al2O3,0. 71% Fe2O3 is obtained,which can meets the standard of top-grade diatomite.