High-mud high secondary copper ore mineral dressing method and combined modifier applied to method

Abstract

The invention belongs to the technical field of the ore flotation process and particularly relates to a high-mud high secondary copper ore mineral dressing method and a combined modifier applied to the method. The combined modifier comprises, by weight, sodium sulfide, sodium metabisulfite, sodium hydrosulfite and sodium carbonate dry powder in proportion of 4-5:1:1-2:1-2. The combined modifier is applied to the high-mud high secondary copper ore mineral dressing method. Lime, the combined modifier and water with the same mass as raw ores are added into the raw ores and then are subjected to grinding and flotation. Copper concentrates and flotation tailings are obtained after two times of concentration and two times of scavenging. The combined modifier effectively eliminates flotation environment deterioration caused by secondary copper ions in flotation pulp through full utilization of the synergic effect of chemicals. The use amount of flotation collectors is reduced. The ore dressing cost is saved. Floating of floatable gangue minerals is effectively suppressed. The electric potential of copper ore flotation pulp is optimized. The flotation speed of copper ores is increased.

Description

technical field [0001] The invention belongs to the technical field of mineral flotation technology, and in particular relates to a beneficiation method of high-sludge and high-secondary copper sulfide ore and a mixing regulator used therein. Background technique [0002] Common high-mud and high-secondary copper sulfide ores have two characteristics: firstly, the ore contains gangues that are easy to muddy, such as serpentine, talc, chlorite, etc., which are easy to muddy during the crushing and grinding process, resulting in The mud content is large, and when the -0.074mm particle size accounts for 70% of the flotation pulp, the -0.074mm particle size accounts for more than 30%~50%, and the mudification is serious; secondly, the content of secondary copper sulfide minerals in the ore is relatively high, and the secondary Raw copper accounts for more than 50% of the total copper, and a large amount of copper ions are produced during ore mining, crushing and grinding. If th...

AI Technical Summary

Problems solved by technology

If the traditional lime mixing, butyl xanthate + terpineol oil flotation method is used, although qualified copper concentrate can also be obtained, it cannot achieve high-efficiency and refined flotation of high-mud and high-secondary copper sulfide ores. The existing problems are specific The performance is as follows: the content of primary copper sulfide minerals is high, resulting in a large amount of copper ions in the flotation pulp, which reacts with the added collector butyl xanthate, consuming butyl xanthate, resulting in flotation recovery 2. Severe flotation pulp muddying, resulting in deterioration of mineralization environment in the flotation process, which is not conducive to the floating of copper minerals, and the specific surface area of ​​the ore slime is relatively large, and a large amount of adsorption Flotation reagents increase the cost of beneficiation reagents; 3. The content of heavy metal ions such as copper in flotation tailings is high, and heavy metal ions are not easy to degrade, which seriously pollutes the environment