Tungsten-contained raw ore pretreatment system for realizing green metallurgy

Abstract

The invention discloses a tungsten-contained raw ore pretreatment system for realizing green metallurgy. The system comprises a four-stage dissolution reaction closed container; the four-stage dissolution reaction closed container has a previous-stage dissolution solid material inlet, an each-stage high-concentration ammonium phosphate solution inlet, an each-stage water inlet, an each-stage ammonium phosphate and water mass ratio controller, an each-state reaction temperature controller, an each-stage stirring speed controller, an each-stage reaction time controller, an each-stage stirring paddle, and an each-stage dissolution solid material outlet, wherein the first-stage dissolution reaction closed container has a tungsten ore inlet and a waste slag feedback inlet; the fourth-stage dissolution reaction closed container has an intermediate product outlet leaded to subsequent procedure equipment; and the waste slag discharge controller has a waste slag inlet, a waste slag feedback discharge port and a waste slag discharge port. The system can realize green metallurgy, and is simple in process flow, easy to master the field by a person, low in production cost, high in product profit and easy to realize industrial application.

Description

technical field [0001] The invention relates to a tungsten-containing raw ore pretreatment system for realizing green metallurgy, in particular to a tungsten ore decomposition system, which belongs to the tungsten ore decomposition technology in the APT production process. Background technique [0002] In the prior art, all over the world, the APT industry adopts the "open circuit" mode, and the solution does not circulate, resulting in a large consumption of auxiliary raw materials, and a large amount of waste water is generated, causing serious environmental pollution. The main reason is that a large amount of high-salt waste liquid is produced during the transformation of tungstate solution, which cannot be recycled economically; the mother liquor of evaporation and crystallization is difficult to be recycled economically, and waste water containing ammonia nitrogen is produced. That is to say, in the existing technology, if the enterprise changes the "opening" mode to th...

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Problems solved by technology

This method is only suitable for processing scheelite, and the liquid ammonia used is corrosive and easy to volatilize, which belongs to the 2.3 category of toxic substances. The incidence of chemical accidents is very high, and strict safety and environmental protection facilities are required in the industrialization process.

[0007] In short, in the existing technology, although the idea of ​​green metallurgy has emerged, hoping to achieve no pollution discharge in the whole process, it is still in the research and development stage, and the process is complicated, and it is not easy for the production site personnel to master it. So far, there is no precedent for industrial application

[0008] Therefore, there is no such a full-process zero-emission metallurgical process for tungsten-containing minerals in the prior art. It can not only realize green metallurgy, but also has a simple process flow, easy to master on-site individuals, low production costs, high product profits, and easy industrial application.

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