A kind of process of recovering sericite from gold dressing tailings

Abstract

The invention relates to a process for recovering sericite from gold dressing tailings, belonging to the field of sericite recovery technology, comprising the following steps: (1) Magnetic separation: performing a stage of grinding on the gold dressing tailings, and magnetically separating the ground products , to obtain magnetic separation concentrate and magnetic separation tailings; (2) gravity separation roughing: the magnetic separation concentrate is carried out gravity separation roughing to obtain heavy gravity separation concentrate and gravity separation tailings; (3) gravity separation Selection and selection: the first re-selection and concentration will be carried out on the re-selected rough-selected concentrate to obtain the first re-selected concentrated ore and the first re-selected tailings, and then the first re-selected concentrate Carry out the second gravity selection and concentration to obtain the second gravity concentration concentrate and the second gravity concentration tailings, and carry out the second gravity concentration to the third gravity concentration to obtain the third (4) Gravity Sweeping; (5) Dehydration, abandoning the traditional flotation process, reducing the cost of recovery process and the cost of industrial polluting waste liquid produce and improve recycling efficiency.

Description

technical field [0001] The invention relates to a process for recovering sericite from gold dressing tailings, and belongs to the field of sericite recovery process. Background technique [0002] Sericite is a kind of mica. It belongs to silicate minerals with a layered structure. It has good wear resistance and abrasion resistance, and is heat-resistant and insulating. In addition, the chemical composition and structure of sericite are similar to kaolin, and it has Certain characteristics of clay minerals, that is, good dispersion and suspension in aqueous media and organic solvents, so sericite has many characteristics of both mica minerals and clay minerals. The mineral resource reserves of sericite in my country are large and widely distributed, but very few can be developed and utilized. [0003] With the development and utilization of mineral resources, resources are becoming increasingly depleted, tailings as a secondary resource have received more attention, a large...

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Problems solved by technology

However, gold dressing tailings have the characteristics of large quantity, complex composition, and various types. Among them, the tailings of quartz vein type gold-bearing pyrite flotation contain minerals such as sericite and calcite, among which sericite has potential characteristics of high added value. If the useful components in the tailings are not recovered, it will cause huge waste

[0004] The gold tailings recovery process in the prior art generally uses the flotation process to recover sericite, but the flotation process uses a large amount of chemicals, which not only increases the cost of recovery production, but also causes serious pollution to the environment , leading to waste liquid that is difficult to handle in the recycling process, wasting financial and material resources for waste liquid treatment, which virtually increases the recycling cost and reduces the recycling efficiency; in addition, the product components recovered from sericite in the prior art are more complex and have more impurities , where Al, which measures the purity of sericite 2 o 3 The content cannot be guaranteed, so the purity level of the obtained sericite cannot be guaranteed. In the follow-up, it is necessary to classify and identify the recovered sericite before it can be put into production and use in the corresponding process. Therefore, the process of recovering sericite in the prior art still exists Many deficiencies need to be overcome

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