Method for preparing high-purity ferric oxide red from industrial copper smelting slag

A technology for ferric oxide and copper smelting slag, which is applied in the direction of iron oxide/iron hydroxide, iron oxide, and process efficiency improvement, can solve the problems of low quality, high cost, dark iron red color, etc., and achieves particle size The effect of uniform distribution, bright color and regular appearance

Active Publication Date: 2018-12-07
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since copper smelting slag contains Si, Pb, Mn, Zn, Al, Co, Ti and Cu and other components, on the one hand, it requires a large cost in the impurity removal process, and on the other hand, due to the existence of Mn element, the preparation The iron red color is dark and the quality is low

Method used

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  • Method for preparing high-purity ferric oxide red from industrial copper smelting slag
  • Method for preparing high-purity ferric oxide red from industrial copper smelting slag
  • Method for preparing high-purity ferric oxide red from industrial copper smelting slag

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Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1 As shown, a kind of industrial copper smelting slag is used as raw material to prepare high-purity, high value-added Fe 2 o 3 Iron red method. figure 2 It is an optical photograph of industrial copper smelting slag. From figure 2 It can be seen that the copper smelting slag has a large size and irregular block structure, and the slag has a khaki appearance.

[0040] After crushing and grinding the industrial copper smelting slag, mix 100g of copper smelting slag with 500g of dilute hydrochloric acid with a concentration of 22%, transfer it into a three-necked round-bottomed flask, raise the temperature to 98°C in an oil bath, condense and reflux for 20 hours, and the reaction is over After cooling to room temperature, the mixture solution was filtered, 5g of oxidant sodium persulfate was added to the obtained filtrate, the oxidant and copper smelting slag were in a mass ratio of 5:100, mechanically stirred for 6 hours, and the stirring speed was 9...

Embodiment 2

[0049] A kind of industrial copper smelting slag as raw material to prepare high-purity, high value-added Fe 2 o 3 Iron red method, the specific steps are:

[0050] After the industrial copper smelting slag is crushed and ground, take 100g of copper smelting slag and mix it with 500g of 20% dilute hydrochloric acid, then transfer it to a three-necked round-bottomed flask, raise the temperature to 98°C in an oil bath, condense and reflux for 10 hours, and the reaction is over After cooling to room temperature, the mixture solution was filtered, 5g of oxidant sodium peroxide was added to the obtained filtrate, the oxidant and copper smelting slag were in a mass ratio of 5:100, mechanically stirred for 6 hours, and the stirring speed was 800 rpm, and then the solution was allowed to stand 24h, after filtering and washing, 6.67g reduced iron powder was added to the solution, the reduced iron powder and copper smelting slag were added according to the mass ratio of 1:15, mechanica...

Embodiment 3

[0053] A kind of industrial copper smelting slag as raw material to prepare high-purity, high value-added Fe 2 o 3 Iron red method, the specific steps are:

[0054] After crushing and grinding the industrial copper smelting slag, mix 100g of copper smelting slag with 500g of dilute hydrochloric acid with a concentration of 25% and transfer it into a round-bottomed three-neck flask, raise the temperature to 98°C in an oil bath, condense and reflux for 24 hours, and the reaction is over After cooling to room temperature, the mixture solution was filtered, and 5g of oxidizing agent sodium perchlorate was added in the obtained filtrate, and the oxidizing agent and copper smelting slag were 5:100 according to the mass ratio, mechanically stirred for 6h, and the stirring speed was 1000 rpm, and then the solution was static Set aside for 24 hours, filter and wash, then add 6.67g of reduced iron powder to the solution, add reduced iron powder and copper smelting slag at a mass ratio ...

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Abstract

The invention relates to a method for preparing high-purity ferric oxide red from industrial copper smelting slag. The method comprises: (1) pulverizing and grinding copper smelting slag, adding diluted hydrochloric acid into the powder, carrying out mixing, carrying out heating treatment, carrying out filtration, adding an oxidizing agent into the filtrate, carrying out stirring and standing, filtering the mixed solution, adding reduced iron powder into the filtrate and carrying out stirring to obtain a red clear solution, (2) orderly adding a dispersing agent and a precipitating agent into the red clear solution to obtain precipitates which are ferric oxide red precursors, and (3) finally, hydrothermally treating the ferric oxide red precursors and carrying out filtration, washing and drying to obtain a desired product Fe2O3 ferric oxide red. Compared with the prior art, the method realizes the comprehensive utilization of iron elements in solid wastes of metallurgical enterprises based on combination of chemical, chemical engineering and nanotechnology, produces the high-purity and high value-added Fe2O3 red product, satisfies green environmental protection and sustainable development strategies and has a great significance for promoting efficient and clean use of resources.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of industrial copper smelting slag, and relates to a method for preparing high-purity ferric oxide iron red by using industrial copper smelting slag as a raw material. Background technique [0002] Copper powder and copper alloy are important raw materials in the metallurgical products industry, and are widely used in the fields of machinery, metallurgy, chemical industry, and aerospace materials. In 1958, my country established a non-ferrous powder production line in Shanghai Smelter. In 1960, my country's first production workshop for electrolytic copper and some non-ferrous metals produced by electrolysis was built. It is now Shanghai Jiuling Smelting Company. In 1964, it was established in Chongqing Smelter. The production base of electrolytic copper, copper alloy and non-ferrous metals. In 2001, the output of non-ferrous metals reached 1320 tons, of which electrolytic metals were ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06
CPCC01G49/06C01P2004/03C01P2006/80Y02P10/20
Inventor 高国
Owner SHANGHAI JIAO TONG UNIV
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