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Composite adhesive and preparation method and application thereof

A binder and curing agent technology, applied in the direction of carbide, calcium carbide, etc., can solve the problems of unable to maintain the thermal strength of the pellets, unable to reach high temperature, low temperature, etc., to improve the strength, improve the cold and hot strength, and improve the preparation process simple effect

Inactive Publication Date: 2018-04-17
SHENWU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the formation of long-flame coal and quicklime into pellets, the quicklime will react violently with water to form calcium hydroxide. Therefore, all binders that require water are not suitable for forming long-flame coal and quicklime. For organic binders that do not require water, the temperature resistance is too low to reach a high temperature of 700°C to 900°C, and cannot maintain the thermal strength of the pellets

Method used

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  • Composite adhesive and preparation method and application thereof
  • Composite adhesive and preparation method and application thereof
  • Composite adhesive and preparation method and application thereof

Examples

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preparation example Construction

[0029] like figure 1 Shown, according to the preparation method of composite binder of the present invention mainly comprises the following steps:

[0030] 1a) Prepare each component according to the formula ratio, add dialuminum hydrogen phosphate dry powder into the sucrose solution, and stir evenly until completely dissolved;

[0031] 1b) Add dry chromium oxide powder and coking coal coal powder to the mixture obtained in 1a), and stir evenly;

[0032] 1c) Add a zinc oxide curing agent to the mixture obtained in 1b), and stir evenly until a gel-like liquid-solid mixture is formed to obtain a composite binder.

[0033] like figure 2 As shown, utilizing the composite binder prepared by the above-mentioned method to prepare high-quality calcium carbide generally comprises the following steps:

[0034] 2a) Mix long-flame coal, quicklime and composite binder uniformly in a weight ratio of 1:1-1.3:0.1-0.2;

[0035] 2b) The mixture is molded by a roller briquetting machine in...

Embodiment 1

[0039] The preparation method of the composite binder of the embodiment of the present invention 1 comprises the following steps:

[0040] 1a) Add 25kg of dialuminum hydrogen phosphate dry powder into 100kg of sucrose solution with a concentration of 30wt%, and stir evenly until completely dissolved;

[0041] 1b) Add 8 kg of chromium oxide dry powder with a particle size not greater than 50 μm and 25 kg of coking coal powder with a particle size not greater than 150 μm into the mixture obtained in 1 a), and stir evenly;

[0042] 1c) Add 4 kg of zinc oxide curing agent with a particle size not greater than 50 μm to the mixture obtained in 1b), and stir evenly until a gel-like liquid-solid mixture is formed to obtain a composite binder.

[0043] Using the composite binder prepared by the above method to prepare high-quality calcium carbide generally includes the following steps:

[0044] 2a) Mix 100kg of long-flame coal with a particle size not greater than 150 μm, 110 kg of qu...

Embodiment 2

[0049] The preparation method of the composite binder of the embodiment of the present invention 2 comprises the following steps:

[0050] 1a) Add 20kg of dialuminum hydrogen phosphate dry powder into 100kg of sucrose solution with a concentration of 30wt%, and stir evenly until completely dissolved;

[0051] 1b) Add 6 kg of chromium oxide dry powder with a particle size not greater than 100 μm and 23 kg of coking coal powder with a particle size not greater than 300 μm to the mixture obtained in 1 a), and stir evenly;

[0052] 1c) Add 3 kg of zinc oxide curing agent with a particle size not greater than 100 μm to the mixture obtained in 1b), and stir evenly until a gel-like liquid-solid mixture is formed to obtain a composite binder.

[0053] Using the composite binder prepared by the above method to prepare high-quality calcium carbide generally includes the following steps:

[0054] 2a) Mix 100kg of long-flame coal with a particle size not greater than 500 μm, 100 kg of qu...

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Abstract

The invention discloses a composite adhesive, which is prepared from the following components in parts by weight: 100 parts of 30wt% sucrose solution, 20-30 parts of dialuminum hydrogen phosphate drypowder, 5-10 parts of chromic oxide dry powder, 20-30 parts of pulverized coking coal and 3-5 parts of a zinc oxide curing agent. The composite adhesive can simultaneously improve the cold and hot strength of long flame coal and quick lime pellets. The invention also discloses a preparation method of the composite adhesive and a method for preparing high-quality calcium carbide by utilizing the composite adhesive.

Description

technical field [0001] The invention relates to the field of binders, in particular to a composite binder and a preparation method thereof, and also to a method for preparing high-quality calcium carbide using the composite binder. Background technique [0002] Long-flame coal is a kind of bituminous coal with the lowest degree of metamorphism. It has extremely weak cohesiveness and is mainly used for power generation or other power. It can also be used to extract low-temperature (500 ° C ~ 600 ° C) tar refining in areas lacking oil. Calcium carbide is an important raw material for the production of acetylene in the field of organic chemical synthesis. It is widely used, but its production process generally has the disadvantages of high pollution and high energy consumption. [0003] Using powdered long-flame coal and powdered quicklime as raw materials to produce calcium carbide can greatly reduce the power consumption of calcium carbide production, and has a huge contribut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/942
Inventor 赵飞翔祁娟高建邓鑫丁力吴道洪
Owner SHENWU ENVIRONMENTAL TECH CO LTD
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