预先脱泥对晋宁磷矿浮选的影响  

Influence of preliminary desliming on flotation of phosphate ore in Jinning

作　　者：陈赐云[1] 杜令攀 钟晋[1] 郭永杰[1] CHEN Ci-yun DU Ling-pan ZHONG Jin GUO Yong-jie(Yunnan Phosphate Chemical Group Co. ,Ltd. , Jinning Yunnan 650600,Chin)

机构地区：[1]云南磷化集团有限公司,云南晋宁650600

出　　处：《化工矿物与加工》2016年第11期14-16,23,共4页Industrial Minerals & Processing

基　　金：国家科技支撑计划项目(2013BAB07B05)

摘　　要：矿泥是选矿过程中影响筛分、破碎、磨矿及浮选的主要有害因素。晋宁磷矿原矿P_2O_5品位为18.17%,MgO质量分数为4.34%,SiO_2质量分数为26.61%。原矿脱除-0.025mm级别的微细粒矿泥可使原矿P_2O_5品位提高1.14%,为19.31%,倍半氧化物(R_2O_3)可降低0.65%,为3.00%。通过未脱泥原矿与脱泥原矿浮选对比试验,脱泥原矿浮选指标均好于未脱泥原矿,且泡沫流动性好,浮选捕收剂用量较未脱泥原矿少20%左右。因此,晋宁磷矿脱除-0.025mm粒级矿泥后再浮选是可行的,既可以提高选矿指标又可以有效降低选矿成本。slime is a main harmful factor to affect screening, crushing, grinding and flotation in the beneficiation process. Jin- ning phosphate ore has a P2O5 grade of 18.17%, content MgO 4.34% and SiOz content 26.61%. Removing a fraction of 0. 025 mm slurry from the raw ore can make P2 O5 grade higher by 1.14% to 19.31% and sesquioxides （ R2O3 ） lower by 0.65 % to 3.00%. The flotation comparison tests on un-deslimed ore and deslimed ores showed that the flotation indexes of deslimed ore is better than un-deslimed ore, the flotation foam has good liquidity and the collector dosage of flotation is about 20% less than un- deslimed ore. Therefore, the process of flotation of Jinning phos- phate ore after removing a fraction of -0. 025 mm slurry is feasi- ble. It can not only enhance the beneficiation indicators but also effectively reduce the costs of beneficiation.

关 键 词：磷矿 脱泥 浮选 捕收剂 

分 类 号：TD971[矿业工程—选矿]