Method for preparing modified white carbon black

A white carbon black and modification technology, which is applied in the field of white carbon black, can solve the problems of low white carbon black yield, high waste water treatment cost, and difficult treatment, so as to overcome uneven heating, improve aging process, and enhance BET The effect of specific surface area

Active Publication Date: 2018-11-30
昆山国通新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] What this application is to solve is to provide a preparation method of modified white carbon black, which solves the problems of low yield and high pollution rate of white carbon black prepared by precipitation method in the prior art;
[0005] Another technical problem to be solved in this application is to provide a primary sedimentation tank to solve the problems of high wastewater treatment cost and difficult treatment in the prior art;

Method used

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  • Method for preparing modified white carbon black
  • Method for preparing modified white carbon black
  • Method for preparing modified white carbon black

Examples

Experimental program
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Effect test

Embodiment 1

[0051] A preparation method of modified silica includes the following steps:

[0052] S1: Add solid sodium silicate to the dissolving device, add water and seal the dissolving device, pass steam until the vapor pressure in the dissolving device reaches 120cm Hg, and stop. After all the sodium silicate is dissolved, the specific gravity is 1.37 g / cm 3 Dilute sodium silicate solution, and put the above dilute sodium silicate solution into the reaction kettle;

[0053] S2: Slowly transport 98% concentrated sulfuric acid through the pipeline to the dilution tank to form a specific gravity of 1.27g / cm 3 Dilute sulfuric acid, the dilute sulfuric acid prepared above is 10.5m 3 / h is transported to the reactor, and the reaction temperature is controlled to be 31°C and mixed and stirred until the pH of the solution in the reactor reaches 7, then it is allowed to stand for 2 hours for aging and seed crystal formation, and then stirred to form a mixed solution;

[0054] S3: Pass high-temperatur...

Embodiment 2

[0059] The content of this embodiment is basically the same as that of embodiment 1, and the similarities will not be repeated. The difference is: in step S1, solid sodium silicate is added to the dissolving device, water is added and the dissolving device is sealed, and the The steam stops when the steam pressure in the dissolving device reaches 125cm Hg. After all the sodium silicate is dissolved, the specific gravity is 1.37g / cm 3 Dilute the sodium silicate solution, and put the above-mentioned dilute sodium silicate solution into the reaction kettle.

Embodiment 3

[0061] The content of this embodiment is basically the same as that of embodiment 1, and the similarities will not be repeated. The difference is: in step S1, solid sodium silicate is added to the dissolving device, water is added and the dissolving device is sealed, and the The steam stops when the steam pressure in the dissolving device reaches 150cm Hg. After all the sodium silicate is dissolved, the specific gravity is 1.37g / cm 3 Dilute the sodium silicate solution, and put the above-mentioned dilute sodium silicate solution into the reaction kettle.

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Abstract

The invention relates to the technical field of white carbon black, and concretely relates to a method for preparing modified white carbon black. The method comprises the following steps: S1, adding solid sodium silicate into a dissolving device, adding water, sealing the dissolving device, introducing steam until the steam pressure in the dissolving device reaches 120-150 cm Hg, dissolving all the sodium silicate to form a dilute sodium silicate solution having a specific gravity of 1.36-1.38 g / cm<3>, and adding the dilute sodium silicate solution into a reactor. The solid sodium silicate isadded into the dissolving device, water is added, the dissolving device is sealed, the steam is introduced to achieve the steam pressure in the dissolving device, the introduced steam can accelerate the dissolution of the solid sodium silicate, and when the pressure of the introduced steam is 120-150 cm, the heating solid sodium silicate is accelerated, the molecular activity is improved, and thedissolving cycle is shortened.

Description

Technical field: [0001] The invention relates to the technical field of white carbon black, in particular to a method for preparing modified white carbon black. Background technique: [0002] Silica is an important reinforcing material in the rubber industry. Because its microstructure and aggregate morphology are similar to carbon black, and have similar reinforcing properties in rubber, it is called silica. The first generation of white carbon black is a traditional or "standard" white carbon black variety. The second generation is called "high-performance reinforcing white carbon black", that is, Hengsil-988 high-performance reinforcing white carbon black. It is a new type of reinforcing material with high dispersibility suitable for green tires. Energy saving and environmental protection are the two major themes of today's society. [0003] In the prior art, the precipitation method is used to prepare white carbon black. The production cost is relatively high, which is mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/30C09C3/12C08K9/06C08K3/36C08L21/00C01B33/193C01D5/16C01F11/46
CPCC01B33/193C01D5/16C01F11/46C01P2006/12C08K3/36C08K9/06C09C1/3081C08L21/00
Inventor 刘宁
Owner 昆山国通新能源科技有限公司
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