A method for utilizing zinc-containing raw ore by strontium zincate synthesis step

Abstract

The present disclosure relates to a process for utilizing zinc-containing ore through a strontium zincate synthesis step, comprising a leaching step, an optional purification step, a decarburization step, a strontium zincate synthesis step, an optional rinsing step, and a drying or calcination step. The present disclosure realizes the synthesis of strontium zincate in the environment of zinc ammonia for the first time, and the reaction selectivity of synthesizing strontium zincate from zinc ammonium complex ions is high, simple and fast, and high value-added products are economically and environmentally friendly prepared from low-grade raw ores that are difficult to handle The disclosed method has a wide range of applications, can effectively extract and utilize various forms of zinc-containing raw ores, enriches zinc elements through the synthesis of strontium zincate, solves the problems of process recovery and high-quality goods grade, and the obtained products can be As a product directly, it can also be used as an industrial raw material.

Description

technical field [0001] The invention belongs to the technical field of inorganic chemical industry, and relates to resource utilization of low-grade zinc-containing raw ore, in particular to a method for utilizing zinc-containing raw ore, especially low-grade zinc-containing raw ore, through a synthesis step of strontium zincate. Background technique [0002] Strontium zincate is a valuable material in special ceramics, battery electrodes, fluorescent materials, etc. However, the preparation of strontium zincate is still limited to laboratory exploration, and the preparation scale is small and the cost is high. The industrial production method of strontium zincate is still immature, and there is a lack of methods that can be applied industrially and stably produce strontium zincate and its derivatives on a large scale, especially lack of production methods starting from zinc-containing raw materials with high impurity content. [0003] The process of economically and efficie...

AI Technical Summary

Problems solved by technology

The current industrial status quo urgently needs to solve this problem, because although the total amount of zinc resources in my country is abundant, the overall grade of zinc ore is low, and a large number of dull ore and lean ore cannot be effectively treated due to the lack of industrially economical and effective treatment methods. Utilization, a large amount of zinc raw materials have to be imported every year to meet the needs of production and consumption. At the same time, a large number of mining tailings and mineral processing tailings containing 3% to 5% zinc oxide are stockpiled, causing great pressure

[0004] The existing low-grade zinc ore treatment technology has many defects, so it is difficult to use in actual production

For example, the process of pyroprocessing low-grade zinc oxide ore is facing elimination due to high energy consumption and heavy pollution, which does not meet the policy orientation of energy conservation and emission reduction.

Flotation is currently the main process for processing zinc oxide ore, but the low recovery rate and low concentrate grade are common problems faced by various flotation processes

The wet extraction of zinc ore has problems such as poor leaching selectivity, unsatisfactory leaching efficiency, and difficult recovery after leaching.

Therefore, the prior art lacks a cost-effective method to prepare various industrial products from low-grade zinc ore