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Method for separating and purifying valuable elements in serpentine rock

A technology of valuable elements and purification methods, applied in organic chemistry, carboxylate preparation, magnesium hydroxide, etc., can solve problems such as unfavorable treatment, poor physical properties of iron hydroxide, insufficient whiteness, etc., and achieve high iron removal efficiency, Low belt loss rate and cost saving effect

Inactive Publication Date: 2014-07-23
张掖市拓普科技研发有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that when the pH value is adjusted with lye, magnesium hydroxide precipitation will be formed due to the local concentration of too much alkali, resulting in a large amount of magnesium loss.
The pH value control of the iron removal solution by the hydrolysis method is relatively high, so the ferric hydroxide produced has poor physical properties, is colloidal and difficult to filter, and has a large amount of slag, which is not conducive to treatment
[0008] Due to technical factors, the products generated from serpentine are mainly magnesium oxide and ordinary white carbon black, which have problems such as low purity and insufficient whiteness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 A method for separation and purification of valuable elements in serpentinite, comprising the following steps:

[0028] 1. Cleaning, coarse crushing, fine crushing, crushing and other pretreatments of serpentinite raw ore: control the diameter of the raw ore block between 100 and 250mm, and then put the raw ore into the coarse crushing process; the ore particle size produced by the coarse crushing process is 40 Between ~100mm, carry out the fine crushing process, the output ore particle size is 25~60mm, and then enter the ball milling process; after the fine grinding process of the ball milling process, the fineness of the obtained powder is 120 mesh;

[0029] 2. Acid hydrolysis process

[0030] Send 1000Kg of serpentine powder that meets the requirements into the first-level acidolysis tank, mix with the second-level acidolysis solution, add water until the liquid volume is 4500L, heat to 65°C under stirring and mix with 100L concentrated sulfuric acid (co...

Embodiment 2

[0043] Embodiment 2 A method for separation and purification of valuable elements in serpentinite, comprising the following steps:

[0044] 1. Cleaning, coarse crushing, fine crushing, crushing and other pretreatments of serpentinite raw ore: control the diameter of the raw ore block between 100 and 250mm, and then put the raw ore into the coarse crushing process; the ore particle size produced by the coarse crushing process is 40 Between ~100mm, carry out the fine crushing process, the output ore particle size is 25~60mm, and then enter the ball milling process; after the fine grinding process of the ball milling process, the fineness of the obtained powder is 140 mesh;

[0045] 2. Acid hydrolysis process

[0046] Send 1000Kg of serpentinite powder that meets the requirements into the first-level acidolysis tank, mix it with the second-level acidolysis solution, add water until the liquid volume is 4500L, and heat it to 95°C under stirring with 300L concentrated sulfuric acid...

Embodiment 3

[0059] A method for separation and purification of valuable elements in serpentinite in embodiment 3, comprising the following steps:

[0060] 1. Cleaning, coarse crushing, fine crushing, crushing and other pretreatments of serpentinite raw ore: control the diameter of the raw ore block between 100 and 250mm, and then put the raw ore into the coarse crushing process; the ore particle size produced by the coarse crushing process is 40 Between ~100mm, carry out the fine crushing process, the output ore particle size is 25~60mm, and then enter the ball milling process; after the fine grinding process of the ball milling process, the fineness of the obtained powder is 160 mesh;

[0061] 2. Acid hydrolysis process

[0062] Send 1000Kg of serpentinite powder that meets the requirements into the first-level acidolysis tank, mix with the second-level acidolysis solution, add water until the liquid volume is 4500L, heat to 70°C under stirring and mix with 450L concentrated sulfuric aci...

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Abstract

The invention relates to comprehensive utilization of serpentine rock and in particular relates to a method for separating and purifying valuable elements in the serpentine rock. The method for separating and purifying the valuable elements in the serpentine rock comprises the steps of pretreating serpentine rock raw ore, carrying out acid hydrolysis, deironing, denickeling and carrying out co-precipitation, so that magnesium hydroxide, white carbon black, ferrous oxalate and other products are separated and purified. The method for separating and purifying the valuable elements in the serpentine rock has the advantages that the technology is mature, cost is saved, the environment is not polluted and product quality is high.

Description

technical field [0001] The invention relates to comprehensive utilization of serpentinite, in particular to a method for separating and purifying valuable elements in serpentinite. Background technique [0002] my country is rich in serpentinite resource reserves. Serpentinite is rich in magnesium oxide, silicon dioxide and other components. Some serpentinite also contains a certain amount of precious metals, such as nickel and palladium, which have high comprehensive development and utilization value. . Serpentinite is mainly used in the manufacture of fertilizers, refractory materials, cast stone or auxiliary materials for rock wool, resulting in a great waste of valuable element resources. With the advancement of technology and the improvement of people's awareness of resources, it has gradually become a development trend to extract valuable elements in serpentinite to prepare chemical products. Problems such as low consumption of raw materials, large consumption of raw ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/20C01F5/40C01B33/113C07C55/07C07C51/41
Inventor 宁婷婷
Owner 张掖市拓普科技研发有限责任公司