福建冶金2026，Vol.55Issue(1)：1-4,4.
某冶炼厂金精矿生物氧化液中和除硬度试验探究
Experimental Study on Hardness Removal by Neutralization of Bio-oxidation Solution from Gold Concentrate in a Smelter
章佳豪 1毋争辉 2王梅君 1谢洪珍 1王亮 1徐芳1
作者信息
- 1. 低品位难处理黄金资源综合利用国家重点实验室,福建 厦门 361101||厦门紫金矿冶技术有限公司,福建 厦门 361101
- 2. 陇南紫金矿业有限公司,甘肃 陇南 742500
- 折叠
摘要
Abstract
Aiming at the problems of neutralization and hardness removal in the treatment of bio-oxidation solution of gold concentrate in a smelter,the"limestone+lime"two-stage neutralization combined with the CO2 softening process was adopted to systematically study the effects of reagent combinations and process parameters.The results show that:compared with the traditional method,the two-stage neutralization process saves 450.6 kg of lime powder per ton of concentrate,and the cost is reduced by 194 yuan per ton of concentrate;after optimizing the limestone particle size to 91.5 μm,the reagent consumption is reduced by 20%,and the filtration time is stably maintained at 2.5 minutes.By using Ca(OH)2 to regulate the pH to 12 and reacting for 15 minutes,the removal rate of Mg2+reaches 98%.By combining with controlling the pH to 11.5 with CO2,the total hardness is reduced from 2800 mg/L to 275 mg/L(better than the standard of GB/T 19923-2005),the content of heavy metals meets the standard,and the accumulation of sodium ions can be controlled.This process constructs an efficient and low-cost resource utilization scheme for the bio-oxidation solution,providing technical support for the reduction of smelting wastewater.关键词
生物氧化液/二段中和/硬度控制/CO2软化Key words
bio-oxidation solution/bio-oxidation solution/hardness control/CO2 softening引用本文复制引用
章佳豪,毋争辉,王梅君,谢洪珍,王亮,徐芳..某冶炼厂金精矿生物氧化液中和除硬度试验探究[J].福建冶金,2026,55(1):1-4,4.
