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Coke passivating agent

A passivating agent and coke technology, applied in solid fuels, blast furnaces, furnace types, etc., can solve problems such as high cost and complex ratio, and achieve the effects of reducing reactivity, improving coke quality, and reducing coke fragmentation

Inactive Publication Date: 2010-02-24
重庆汉砧科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing coke passivators have high costs and complex ratios

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of manufacturing process of coke deactivator is as follows:

[0041] (1) Preparation of passivating agent: take by weighing 1% of glucose, 1.5% of calcium chloride, 1% of silicon dioxide, 14% of titanium dioxide, 36% of boric anhydride, 39% of anhydrous borax, 5% of calcium borate, Antimony 1%, barium metaborate 1.5%.

[0042] (2) Preparation of passivator solution: take domestic water at normal temperature, add passivator, stir rapidly for 1-10 minutes, and prepare passivator solution with a concentration of 3-15%.

[0043] (3) Evenly spray the prepared passivating agent solution on the surface of the coke, and the spraying amount is 2-12% of the mass of the coke. Then store the coke for 0.5-5 hours.

[0044] (4) Measure the coke reactivity and post-reaction strength of the treated coke (executed with reference to GB / T4000-1996 standard).

Embodiment 2

[0046] A kind of manufacturing process of coke deactivator is as follows:

[0047] (1) Preparation of passivating agent: take by weighing 1% of calcium chloride, 1% of silicon dioxide, 3% of titanium dioxide, 25% of boric anhydride, 20% of anhydrous borax, 30% of calcium borate, 3% of barium metaborate, boric acid 17%.

[0048] The following steps (2), (3) and (4) are the same as in Example 1.

Embodiment 3

[0050] A kind of manufacturing process of coke deactivator is as follows:

[0051] (1) Prepare passivating agent: take by weighing 2% of glucose, 5% of boric acid, 3% of silicon dioxide, 9% of titanium dioxide, 12% of boric anhydride, 25% of anhydrous borax, 35% of calcium borate, and 1% of antimony trioxide. %, barium metaborate 8%.

[0052] (2) Preparation of passivating agent solution: take domestic water at normal temperature, heat it to 30-78 degrees, then add purifying agent, stir rapidly for 1-10 minutes, and prepare passivating agent solution with a concentration of 3-15%.

[0053] The following steps (3) (4) are the same as in Example 1.

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Abstract

The invention discloses a coke passivating agent. Raw materials of the coke passivating agent comprises the following components in percentage by weight: 1-16 glucose or calcium chloride, 1-45 boron anhydride, 1-15 titanium pigment, 1-10 silicon dioxide, 1-45 anhydrous borax, 1-46 calcium borate and 1-30 barium metaborate. The coke passivating agent can favorably improve the thermal performance and the thermal intensity of coke, inhibit the solution loss reaction of the coke, lower the reactivity of the coke, optimize a form of carbon and reduce the breakage of the coke fed into a furnace. The coke using the coke passivating agent is used for melting iron in a blast furnace and can increase the yield by 1-4 percent and save coke by 8-20 kg / t.iron. The industrialization of the product is beneficial to propelling the adjustment of an energy source industrial structure of China and improving the quality of the coke, strengthens the market competitiveness of a steel enterprise, has realistic meanings on aspects of economy, resources and environments and conforms to a sustainable development strategy.

Description

technical field [0001] The invention relates to a material for the coking industry, in particular to a coke passivator. Background technique [0002] The practice of large-scale coal injection in blast furnaces at home and abroad shows that the main method to maintain good air permeability of blast furnace material column is to improve the thermal properties of coke - reduce the dissolution reactivity of coke, and correspondingly increase the strength after reaction. Therefore, in recent years, the main work to improve the quality of coke has focused on improving the thermal properties of coke. [0003] Factors affecting coke dissolution reactivity include coke pore and pore structure, carbon microcrystalline structure of pore wall, and inorganic impurity content, etc. Coke with thin pore wall, large porosity, and many catalytic components has poor thermal performance and severe pulverization. Affect the air permeability of the blast furnace. The air permeability of blast ...

Claims

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Application Information

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IPC IPC(8): C10L9/10C21B5/00
Inventor 傅勇
Owner 重庆汉砧科技有限公司
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