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Method for preparing white carbon black with high specific surface area from fluorosilicate

A high specific surface area, fluorosilicate technology, applied in chemical instruments and methods, silicon oxide, silicon dioxide, etc., can solve problems affecting economic and social benefits, unsuitable for large-scale production, complicated process, etc., to achieve The effect of short cycle time, high yield and simple process

Active Publication Date: 2017-02-22
KINGENTA NORSTERRA CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the preparation process, high temperature reactions are used many times, and the energy consumption is high.
[0006] In summary, the preparation of white carbon black in the prior art has problems such as high energy consumption, unfriendly environment, high cost, low yield, complicated process, and not suitable for large-scale production, which seriously affects economic and social benefits.

Method used

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  • Method for preparing white carbon black with high specific surface area from fluorosilicate
  • Method for preparing white carbon black with high specific surface area from fluorosilicate

Examples

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Effect test

Embodiment 1

[0033] A kind of method utilizing fluorosilicate to prepare high specific surface area white carbon black, the steps are as follows:

[0034] (1) Weigh 0.8g of ethanol into 100g of water, stir at 55°C for 5min;

[0035] (2) Add 20 g of potassium fluorosilicate to the aqueous solution prepared in step (1), and stir at 55° C. for 30 min;

[0036] (3) Add 32 g of ammonia water dropwise while stirring up to 60° C., the dropwise addition is completed in 5 minutes, and continue to stir and react for 30 minutes after the dropwise addition is completed;

[0037] (4) Aging at 60°C for 30 minutes, filtering while hot, washing the filter cake filtrate with 55°C deionized water until neutral, and drying at 105°C to obtain 5.35g of white carbon black with a specific surface area of ​​215.5㎡ / g, reaching HG / T 3061-2009 Class A standard, the yield is 98.1%, and the fluorine content is 0.11%.

Embodiment 2

[0039] A kind of method utilizing fluorosilicate to prepare high specific surface area white carbon black, the steps are as follows:

[0040] (1) Weigh 0.3g of n-butanol into 100g of water, stir at 70°C for 5min;

[0041] (2) Add 25g of sodium fluorosilicate to the aqueous solution prepared in step (1), and stir at 70°C for 20min;

[0042] (3) 45g of ammonia water was added dropwise while stirring at 75°C, and the dropwise addition was completed in 10 minutes, and the stirring reaction was continued for 20 minutes after the dropwise addition was completed;

[0043](4) Aging at 70°C for 15 minutes, filtering while hot, washing the filter cake filtrate with 60°C deionized water until neutral, and drying at 105°C to obtain 7.87g of white carbon black with a specific surface area of ​​186.4㎡ / g, reaching HG / T 3061-2009 Class B standard, the yield is 98.5%, and the fluorine content is 0.08%.

Embodiment 3

[0045] A kind of method utilizing fluorosilicate to prepare high specific surface area white carbon black, the steps are as follows:

[0046] (1) Add 0.5kg of ethanol and 0.1kg of n-butanol to 80kg of water in turn, and stir at 60°C for 10min;

[0047] (2) Add 15kg of potassium fluorosilicate to the aqueous solution prepared in step (1), and stir at 60°C for 25min;

[0048] (3) 25kg of ammonia water was added dropwise while stirring at 60°C, and the dropwise addition was completed in 5 minutes, and the stirring reaction was continued for 30 minutes after the dropwise addition was completed;

[0049] (4) Aging at 60°C for 25 minutes, filtering while hot, washing the filter cake filtrate with 60°C deionized water until neutral, and drying at 105°C to obtain 4.01kg of white carbon black with a specific surface area of ​​197.3㎡ / g, reaching HG / T 3061-2009 Class A standard, the yield is 98.0%, and the fluorine content is 0.11%.

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Abstract

The invention discloses a method for preparing white carbon black with the high specific surface area from fluorosilicate. The method comprises steps as follows: firstly, an additive containing an alcoholic hydroxyl group is added to water, fluorosilicate is added to the aqueous solution, ammonia water is dropwise added after even stirring, and the solution reacts continuously; after the reaction, white carbon black with the high specific surface area is obtained through aging, filtration, washing and drying. The operation process is simple, the yield is up to 98% or higher, energy consumption is low, the BET specific surface area of the prepared white carbon black meets the HG / T 3061-2009 class-A standard, and the white activated black can be applied to multiple industries such as rubber, agricultural chemistry, papermaking and the like and has wide application prospect.

Description

technical field [0001] The invention relates to a method for preparing white carbon black with high specific surface area by using fluorosilicate, and belongs to the technical field of white carbon black preparation. Background technique [0002] Fluorosilicate is a by-product of fluorine chemical industry and phosphorus chemical industry, which can be directly used as a product in the construction and building materials industry. However, this product has low added value, narrow use, and poor economic benefits, so it often appears unsalable, which seriously affects the enthusiasm of manufacturers to recycle fluorosilicate, resulting in waste of fluorine and silicon resources, polluting the environment, and even more in the near future. To a large extent, it restricts the healthy development of phosphorus chemical industry. Therefore, it is imminent to develop downstream products of fluorine, especially products with high added value and large market capacity, to maximize t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/18
CPCC01B33/186C01P2006/12C01P2006/80
Inventor 尤龙郑磊邢士玉高建仁张艳玲
Owner KINGENTA NORSTERRA CHEM CO LTD
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