Method for preparing ferric hydroxide-based raw materials containing high value elements

Abstract

The invention relates to a method for preparing ferric hydroxide-based raw materials containing high value elements, belonging to the technical field of resource recycling and wet metallurgy. The preparation method comprises the following steps: burdening, reacting and drying iron-based wastes, thereby preparing the ferric hydroxide-based raw materials containing high value elements comprising hydroxides of iron, high value element compounds and combustible organic matters, wherein the iron and high value elements mainly refer to hydroxides. The product prepared by the invention is powder or breakable agglomerate, is not subjected to spontaneous combustion at the temperature of less than or equal to 200 DEG C, and has the advantages of texture uniformity, difficulty in spontaneous combustion, convenience in use, safety, low consumption of chemical raw materials, high value element dissolution rate and the like. The fire risk of iron-based wastes in the transport, loading and unloading, storage and production processes is eliminated. The preparation method and equipment are simple, easy control is realized, the reaction heat is fully utilized, the reaction speed is high, the security and stability are high, the treatment capacity is high, the production cost is low, the consumption of power, manual labor and energy is greatly saved, and the method is suitable for industrial production.

Description

technical field [0001] The present invention relates to a method for the preparation of ferric hydroxide-based raw materials containing high-value elements. The invention belongs to the field of resource recycling and hydrometallurgy technology. Background technique [0002] In the production and use of iron-based alloy materials mainly composed of iron and high-value elements (hereinafter referred to as iron-based materials), a large amount of debris, leftover materials, slag materials, sludge materials, defective products, etc. containing high Materials with valuable elements (hereinafter referred to as iron-based waste). The iron and high-value elements in the iron-based waste are mainly in the form of simple substances and / or alloys; the high-value elements in the iron-based waste include at least one of rare earth, cobalt, nickel, titanium, copper, manganese, zinc and other elements kind. According to relevant data, these iron-based waste materials contain a large am...

AI Technical Summary

Problems solved by technology

This method has the following defects: A, large acid consumption and high cost; B, to allow the waste to be fully oxidized, the corresponding equipment is complicated and needs to consume a lot of energy and power; C, the yield of some high-value elements is low; D. During the oxidation process, exhaust gas containing black smoke will be produced, which is not easy to handle and pollutes the environment

[0012] This patent also has the following defects: A. The reaction time is long; B. The power and manpower consumption of the operation process is large, which is not conducive to large-scale production; C. The production cost is high; D. The leaching rate of high-value elements is low and the yield is low

But this patent also has the following defects: A, long time, slow response speed; B, large space occupation; C, many intermediate products and turnover materials

[0014] None of the above methods can solve the problems of iron-based waste sampling and high-value element measurement difficulties, spontaneous combustion, long reaction time, and low equipment utilization.

These existing methods for treating iron-based waste have long process flow, low yield, time-consuming, high energy consumption, and there may still be potential safety hazards of spontaneous combustion during transportation, production and utilization.

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