Novel method for recycling synthetic rutile mother liquor

An artificial rutile and resource-based technology, applied in the chemical industry, can solve problems such as poor economic benefits, achieve the effects of less consumption, ensure dispersion and weather resistance, and increase market value

Active Publication Date: 2015-04-22
YIBIN TIANYUAN GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to solve the problem of poor economic benefits of the existing artificial rutile mother liquor treatment technology in view of the shortcomings of the existing production technology, and provide a new method for the resource utilization of the artificial rutile mother liquor, which can be used to obtain pigment-grade high-quality Iron Oxide Red, increasing the value of by-products

Method used

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  • Novel method for recycling synthetic rutile mother liquor
  • Novel method for recycling synthetic rutile mother liquor
  • Novel method for recycling synthetic rutile mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) The mother liquor was allowed to stand for 48h to separate to obtain colloidal precipitate and clear mother liquor, then add 0.1% colloidal precipitate by volume to the clear mother liquor and stir, heat it to boiling within 30min, maintain a slightly boiling state for 30min, and cool to room temperature , add modified polyacrylamide with a volume ratio of 0.5%, stand at room temperature for 48h and then filter;

[0050] (2) Evaporating and concentrating the above-mentioned filtered mother liquor, the quality of the evaporated water accounts for 0.3 of the total mass of the mother liquor, crystallizing under cooling to 5°C, and filtering and separating the crystals;

[0051] (3) The above obtained crystal is configured as a 15% ferrous solution, 0.5% by mass of iron powder is added to carry out the replacement reaction, after the reaction is completed, 3% of modified activated carbon is added for adsorption, the adsorption time is 30min, and the filter is separated; ...

Embodiment 2

[0057] (1) The mother liquor was allowed to stand for 48h to separate to obtain colloidal precipitate and clear mother liquor, then add 0.5% colloidal precipitate by volume to the clear mother liquor and stir, heat it to boiling within 30min, maintain a slightly boiling state for 50min, and cool to room temperature , add modified polyacrylamide with a volume ratio of 0.1%, stand at room temperature for 48h and then filter;

[0058] (2) the above-mentioned filtered mother liquor is evaporated and concentrated, the quality of the evaporated water accounts for 0.6 of the total mass of the mother liquor, crystallized under cooling to 5°C, and the crystals are separated by filtration;

[0059] (3) The obtained crystal is configured as a 25% ferrous solution, 1% by mass of iron powder is added to carry out a replacement reaction, after the reaction is completed, 5% of modified activated carbon is added for adsorption, the adsorption time is 60min, and the filter is separated;

[006...

Embodiment 3

[0065] (1) The mother liquor was allowed to stand for 48 hours to separate to obtain colloidal precipitate and clear mother liquor, then add 0.4% colloidal precipitate by volume to the clear mother liquor and stir, heat it to boiling within 30 minutes, maintain a slightly boiling state for 50 minutes, and cool to room temperature , add modified polyacrylamide with a volume ratio of 1%, stand at room temperature for 48h and then filter;

[0066] (2) Evaporating and concentrating the above-mentioned filtered mother liquor, the quality of evaporating water accounts for 0.9 of the total mass of the mother liquor, crystallizing under cooling to 10 °C, and filtering and separating the crystals;

[0067] (3) The above obtained crystal is configured as a 22% ferrous solution, 1% by mass of iron powder is added to carry out the replacement reaction, after the reaction is completed, 5% of modified activated carbon is added for adsorption, the adsorption time is 120min, and the filter is ...

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Abstract

The invention discloses a novel method for recycling synthetic rutile mother liquor. The method comprises the following steps: treating TiO2 colloid, mechanical impurities and a part of residual metal ions in the mother liquor, concentrating and crystallizing the pretreated mother liquor to obtain a ferrous crystal, re-dissolving the ferrous crystal in deionized water, adding iron powder to reduce, and adsorbing with modified activated carbon to obtain the purified solution of ferrous oxide; preparing the solution of sodium carbonate, adding a certain amount of a heavy-metal precipitating agent, and adding activated charcoal to purify; carrying out coprecipitation reaction on the purified solution of ferrous oxide and the purified solution of sodium carbonate under a certain condition, and introducing air to oxidize at the same time; filtering the product of reaction after reaction, and separating to obtain a filter cake; calcining the filter cake at a certain temperature, cooling, and grinding to obtain primary iron oxide red; and coating the primary iron oxide red, and pulverizing by gas flow to finally obtain the finished iron oxide red. By adopting the method provided by the invention, high-quality rutile mother liquor can be obtained, and the problem of poor economic benefit of the existing technology for treating synthetic rutile mother liquor can be solved.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to a new method for resource utilization of artificial rutile mother liquor, in particular to a method for preparing pigment-grade iron red by utilizing artificial rutile mother liquor. Background technique [0002] Artificial rutile is an important intermediate titanium-rich raw material and an excellent substitute for natural rutile. Among its different production process routes, the production of artificial rutile by hydrochloric acid method has the advantages of fast leaching speed, strong impurity removal ability and high product quality, which is suitable for processing. The advantages of various types of mineral sources have become the mainstream process route, and industrial production has been realized very early. [0003] In the production process of artificial rutile by hydrochloric acid method, about 20% hydrochloric acid is generally used to selectively leaching...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06C09C1/24C09C3/06
Inventor 罗云邓敏颜华唐勇孙永贵王政强缑可贞周高明
Owner YIBIN TIANYUAN GRP CO LTD
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