High value element-containing and iron hydroxide-based raw material and application thereof

An iron hydroxide-based, high-value technology, applied in the direction of iron oxide/iron hydroxide, process efficiency improvement, etc., can solve problems that restrict the comprehensive utilization of resources and the development of circular economy, affect trade and cooperation, and analyze and sample difficulties. , to achieve the effect of convenient further utilization, not easy to escape and burn, and strong resource

Active Publication Date: 2014-12-24
QIANDONG RARE EARTH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] To sum up, there are many problems in the current iron-based waste as follows: 1) The complex shape makes analysis and sampling difficult and measurement inconvenient. At present, there is still no very effective method and technology to obtain sample information convincing both buyers and sellers, which seriously affects the The trade and cooperation between downstream restrict the comprehensive utilization of resources and the development of circular economy; 2) There are fire hazards in the process of transportation, loading and unloading, storage and production, which affect the safety of production; 3) Measures such as air isolation must be taken to reduce the iron-based The danger of combustion and explosion of waste during storage and transportation increases the cost, but sometimes iron-based waste spontaneously ignites or explodes due to various reasons; There is a safety hazard of spontaneous combustion during transportation and utilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] To the NdFeB waste slag (in the form of hard clay lumps, REO23.11wt% in terms of oxides, CoO1.22wt% and 42.53wt% of Fe in terms of elements, 3.85wt% of combustible organic matter in terms of C elements, water 15.02wt%, can be ignited with a match, spontaneously ignites when heated to about 75°C, and the fire point is 104.4°C according to the measurement) add a small amount of hydrochloric acid and an appropriate amount of water, and mix with 5-20M 3 / (M 3 *min) flow into the air, the gas (air) flow = gas (air) volume / (time * total volume of liquid and solid materials after batching), the unit is M 3 / (M 3 *min) (the same below). Control the reaction temperature to be 50-90°C, and at the Reynolds number Re=ρND 2 / μ ≥ 10000 React under mechanical stirring and ultrasonic wave for more than 3 hours, then dry in air to make ferric hydroxide-based raw materials containing high-value elements. The iron hydroxide-based raw material containing high-value elements cannot b...

Embodiment 2

[0060] Oil-free cobalt ice with an average particle size of 0.054mm, containing CoO5.77wt%, NiO17.33wt%, CuO4.78wt%, and Fe58.42wt% in terms of oxides was obtained from nickel-smelting converter slag through "electric furnace depletion" and other processes Copper is used as raw material, add a small amount of sulfuric acid, ammonium sulfate and appropriate amount of water, and use 5-20M 3 / (M 3 *min) flow into the air, control the reaction temperature is 50-90 ° C, and at the Reynolds number Re = ρND 2 / μ ≥ 10000 Reacted for more than 3 hours under stirring conditions, and then dried to produce iron hydroxide-based raw materials containing high-value elements, in which iron hydroxide and other iron elements are TFe32.41wt% as elements, and cobalt is 3.2wt% as CoO , nickel is 9.61wt% as NiO, copper is 2.65wt% as CuO, moisture is 13.34wt%, Y(Fe) is 0.25wt%, Y(Fe 3+ ) is 19.45wt%.

[0061] Cobalt matte has a large proportion of alloyed substances. It is generally believed tha...

Embodiment 3

[0065] Add a small amount of hydrochloric acid and an appropriate amount of water to the cement agglomerated NdFeB waste residue containing 1.65wt% of flammable organic matter in terms of C elements, and add 5-20M 3 / (M 3 *min) flow into the air, control the reaction temperature is 50-90 ° C, and at the Reynolds number Re = ρND 2 / μ ≥ 10000 under stirring conditions for more than 3 hours, and then make iron hydroxide-based raw materials containing high-value elements mainly composed of iron hydroxide, rare earth elements, cobalt elements and water. It cannot be ignited with a match, and the ignition source should be kept heated to 200 ℃ and heat preservation for one hour the material did not catch fire. Among them, iron hydroxide and other iron elements are TFe3.58wt% as elements, cobalt is 0.24wt% as CoO, rare earth elements are 2.2wt% as REO, moisture is 52wt%, combustible organic matter is 0.13wt% as C elements, Y( Fe) is 0.02wt%, Y (Fe 3+ ) is 3.41wt%.

[0066] The ab...

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Abstract

The invention relates to a high value element-containing and iron hydroxide-based raw material and application thereof, and belongs to the technical field of resource recycle and hydrometallurgy. The high value element-containing and iron hydroxide-based raw material mainly comprises iron hydroxide, high value element compounds and combustible organic matters, wherein in terms of element, iron accounts for 3.5-45wt%; in terms of oxides, high value elements account for 2-32wt% altogether and Y (Fe3+) / TFe accounts for more than or equal to 54.47wt%; in terms of C, combustible organic matters account for less than or equal to 6.5wt%; the iron hydroxide-based raw material does not combust spontaneously at the temperature of lower than or equal to 200 DEG C. The high value element-containing and iron hydroxide-based raw material is powdery or in form of an easily-crushed briquette and has the advantages of being homogeneous in structure, unlikely in spontaneous combustion, convenient and safe in use and the like; fire hazards during transportation, loading and unloading, storage and production of an iron-based waste material are prevented and safe production is achieved; during using, the dissolution rates of the high value elements are high and the high value elements can be prepared into different products, so that the maximized utilization of resources is achieved and the development of circular economy is benefited.

Description

technical field [0001] The present invention relates to a ferric hydroxide-based raw material containing high-value element and its application. 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 amount of rare...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B59/00C22B23/00C22B34/12C22B34/32C22B30/06C22B15/00C22B47/00C22B19/30C01G49/02
CPCC01G49/02C22B7/00C22B15/00C22B19/30C22B23/00C22B30/06C22B34/12C22B34/32C22B47/00C22B59/00Y02P10/20
Inventor 刘明彪刘征官龚斌谢楠
Owner QIANDONG RARE EARTH GRP
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