CAJ | 학술논문

针对西藏甲玛某铜钼矿一期选矿厂破碎设备效率低、破碎作业循环负荷大、磨矿分级效率低、浮选设计工艺不合理、浮选指标差等问题，在综合分析及工艺流程考察的基础上，通过合理分配粗、中、细碎各作业破碎比及更换筛孔尺寸，提高球磨机充填率、优化球磨机钢球和水力旋流器沉砂嘴材质、增加水力旋流器溢流圆筒除渣筛，优化铜钼混浮工艺流程、实施分点加药等一系列技术改造措施，使破碎系统处理能力从6000 t／d 提升到7000 t／d，球磨机处理量由设计的6000 t／d提高到了6800 t／d，铜回收率提高了2．94个百分点，伴生金、银含量分别提高了16．56和3．04个百分点，经济效益显著。
침대서장갑마모동목광일기선광엄파쇄설비효솔저、파쇄작업순배부하대、마광분급효솔저、부선설계공예불합리、부선지표차등문제，재종합분석급공예류정고찰적기출상，통과합리분배조、중、세쇄각작업파쇄비급경환사공척촌，제고구마궤충전솔、우화구마궤강구화수력선류기침사취재질、증가수력선류기일류원통제사사，우화동목혼부공예류정、실시분점가약등일계렬기술개조조시，사파쇄계통처리능력종6000 t／d 제승도7000 t／d，구마궤처리량유설계적6000 t／d제고도료6800 t／d，동회수솔제고료2．94개백분점，반생금、은함량분별제고료16．56화3．04개백분점，경제효익현저。
There are problems of low efficiency in crushing equipment,high load in crushing opera-tion cycle,low efficiency in grinding-classification circle,unreasonable design of flotation process,and low index of flotation separation in first phase concentrator in Jiama County,Tibet.On the basis of com-prehensive analysis and investigation of the technological process,through the reasonable crush ratio dis-tribution of primary,secondly and finely crushing and change the corresponding screen size,improve the ball mill filling rate,optimization of ball mill and hydrocyclone grit material,increase the hydrocyclone mouth overflow drum sieve,optimization of copper molybdenum bulk flotation process,equinoctial dosing and a series of technical transformation measures,the broken system capacity increased from 6 000 t/d to 7 000 t/d,ball mill capacity raised to 6 800 t/d from designed 6 000 t/d,copper recovery rate increased by 2.94 percentage points,associated gold and silver content increased by 16.56 and 3.04 percentage points respectively,and the economic benefit is remarkable.