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Solid attapulgite clay acidifier

A technology of attapulgite clay and acidifying agent, which can be applied in other chemical processes, chemical instruments and methods, etc., and can solve problems such as the development of the attapulgite clay industry, the inability to use it in the production of oil decolorizers, low crystallization degree and order degree, etc. problems, achieve the effects of acid water treatment and low discharge load, increase high-value utilization rate, and increase decolorization rate

Inactive Publication Date: 2020-01-14
金昌红泉膨润土有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The attapulgite clay in Linze, Huining and other places in Gansu contains only 20-30% of the mineral composition of attapulgite clay, and the degree of crystallization and degree of order are low, so it cannot be used for the production of oil decolorizers, which has become a problem for local attapulgite. Difficulties in the development of the rod stone clay industry
At present, domestic colleges and universities and enterprises are working hard on research and development, but none of them has developed a feasible technical solution. Gansu attapulgite clay still needs to be developed and utilized in large quantities.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The first attapulgite clay solid acidifier consists of the following components by weight percentage: SiO 2 Content 58%, Al 2 o 3 Content 14.75%, Fe 2 o 3 content 4.63%, MgO content 3.17%, CaO content 0.78%, SO 3 The content is 2.63%, the loss on ignition is 13.24%, the free acid content is 2.5%, and the balance is unavoidable impurities.

[0042] The preparation method of the above-mentioned first attapulgite clay solid acidifying agent comprises the following steps:

[0043] Step 1: crushing, mixing bentonite ore and attapulgite clay in a ratio of 2:1 and crushing with a jaw crusher to form 300 kg of crushed material A;

[0044] Step 2: wet purification, put crushed material A into 1000 kg of water, add 8 kg of dispersant for wet purification, and form mixture B;

[0045] Step 3: adding acid, 75 kilograms of concentration is that 98% sulfuric acid is dropped into the mixture B and stirred evenly to form the mixture C;

[0046] Step 4: Heating and acidifying, he...

Embodiment 2

[0066] The second attapulgite clay solid acidifier consists of the following components by weight percentage: SiO 2 Content 65%, Al 2 o 3 Content 12.62%, Fe 2 o 3 content of 2.32%, MgO content of 0.45%, CaO content of 1.24%, SO 3 The content is 2.63%, the loss on ignition content is 9.24%, the free acid content is 6.28%, and the balance is unavoidable impurities.

[0067] The preparation method of the above-mentioned second attapulgite clay solid acidifying agent comprises the steps:

[0068] Step 1: crushing, mixing bentonite ore and attapulgite clay in a ratio of 3:1 and crushing with a jaw crusher to form 300 kg of crushed material A;

[0069] Step 2: wet purification, put crushed material A into 1000 kg of water, add 5 kg of dispersant for wet purification, and form mixture B;

[0070] Step 3: add acid, 112.5 kilograms of concentration is that the sulfuric acid of 98% is dropped in the mixture B and stirred evenly, forms mixture C;

[0071] Step 4: Heating and acidi...

Embodiment 3

[0091]The third attapulgite clay solid acidifying agent consists of the following components by weight percentage: SiO 2 Content 71%, Al 2 o 3 Content 6.12%, Fe 2 o 3 content 1.52%, MgO content 0.24%, CaO content 2.31%, SO 3 The content is 0.65%, the loss on ignition is 7.11%, the product free acid is 11%, and the balance is unavoidable impurities.

[0092] The preparation method of the above-mentioned third attapulgite clay solid acidifying agent comprises the following steps:

[0093] Step 1: crushing, mixing bentonite ore and attapulgite clay in a ratio of 4:1 and crushing with a jaw crusher to form 300 kg of crushed material A;

[0094] Step 2: wet purification, put crushed material A into 1000 kg of water, add 10 kg of dispersant for wet purification, and form mixture B;

[0095] Step 3: add acid, 150 kilograms of concentration is that the sulfuric acid of 98% is dropped in the mixture B and stirred evenly, forms mixture C;

[0096] Step 4: Heating and acidifying, ...

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Abstract

The invention relates to the technical field of attapulgite clay processing and in particular relates to a solid attapulgite clay acidifier which consists of the following components in percentage byweight: 58-71% of SiO2, 5.0-15% of Al2O3, 1.5-5% of Fe2O3, 0.2-5.5% of MgO, 0.5-4.5% of CaO, 2.5-11% of a free acid and the balance of inevitable impurities. The solid attapulgite clay acidifier can be used for processing low-grade attapulgite raw ores, a decolorizing agent which conforms to national standards can be prepared, and the technical blank of producing decolorizing agents from the low-grade attapulgite raw ores can be made up.

Description

technical field [0001] The invention relates to the technical field of attapulgite clay processing, in particular to an attapulgite clay solid acidifier. Background technique [0002] Attapulgite clay is used in the production of oil decolorizing agent with good decolorization power, simple activation process, raw materials are produced through activation, curing, modification, crushing and classification, no need to remove impurities, no tailings, no need to rinse and deacidify, no environmental pollution , can be produced continuously, and the production cost is low. However, there is a high requirement for the grade of the attapulgite clay used in production, and the attapulgite content in the mineral components is at least greater than 45%, or even greater than 50%. [0003] At present, the domestic use of attapulgite clay to produce oil decolorizer mainly uses high-quality attapulgite clay from Xuyi and Liuhe, Jiangsu. The mineral composition of attapulgite clay in Xu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/12
CPCB01J20/3085B01J20/12
Inventor 雍积全王志梅王惠善
Owner 金昌红泉膨润土有限责任公司
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