Recycling process of associated low-grade silver and cobalt in skarn type cupreous magnetite

Abstract

The invention discloses a recycling process of associated low-grade silver and cobalt in skarn type cupreous magnetite. The recycling process comprises the following steps of (1) performing bulk flotation on the skarn type cupreous magnetite, so that copper-sulfide mixed concentrate is obtained; (2) finely grinding the copper-sulfide mixed concentrate, so that the degree of dissociation of silverand cobalt carrier minerals is increased; (3) obtaining high-copper concentrate products with high silver content which is greater than 20 g / t by adopting a partial selective floatation process first,and then obtaining low-copper concentrate and sulfur concentrate with low silver content by adopting a separation flotation process, so that the enrichment and recycling of silver in copper and sulfide separation flotation are realized; and (4) deironing the sulfur concentrate, so that cobalt-sulfur concentrate products with the cobalt content which is greater than 0.28% can be obtained. According to the recycling process, the high-copper concentrate products with the silver content which is greater than 20 g / t and the cobalt-sulfur concentrate products with the cobalt content which is greater than 0.28% are obtained, the recycling of the associated low-grade silver and cobalt in the skarn type cupreous magnetite is realized, and the economic benefit of mineral resources is greatly increased.

Description

technical field [0001] The invention relates to mine beneficiation technology, in particular to a recovery process of low-grade silver and cobalt associated with skarn-type copper-bearing magnetite. Background technique [0002] Copper-sulfur ore is one of the main types of copper ore. The beneficiation process mainly adopts flotation method, which usually includes priority flotation process, mixing-separation flotation process, semi-priority-mixing-separation flotation process, sediment separation The selection process and the combination of selection and smelting process. [0003] Daye Iron Mine is a large-scale contact metasomatism skarn-type copper-bearing magnetite deposit, in addition to the main metal iron, there are also valuable components such as copper, gold, silver, cobalt and sulfur. The process of mixed flotation-copper-sulfur separation-floating tail magnetic separation is adopted. In mixed flotation, dixanthate is used as the collector of copper and sulfur m...

AI Technical Summary

Problems solved by technology

However, under the current process of separation of copper and sulfur (one rough, three sweeps and two refined), the copper concentrate produced by ore dressing contains 15-16g / t of silver, and the sulfur concentrate contains less than 0.2% cobalt. The product cannot be priced when it is sold. Resource efficiency has not been fully utilized