Method for preparing high-strength iron-making coke by using chemical waste
A waste and high-strength technology, applied in the field of coal chemical industry, can solve the problems of low utilization value and lack of economy, achieve the effects of reducing burning loss, meeting quality requirements, improving quality strength and utilization value of coke powder
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[0021] Example 1:
[0022] (1) Pre-grind the coke powder, coal powder, and pitch tailings produced in the coking process to below 1 mm. Pulverized coal includes gas coal, 1 / 3 coking coal, fat coal, coking coal, and lean coal. The specific configuration is as follows:
[0023] Coal type gas coal 1 / 3 coking coal Fat coal Coking coal lean coal proportion 5%15%15%50%15%
[0024] The volatile content of coal powder is 22.0%, ash content is 10.0%, and sulfur content is 0.60%; the volatile content of coke powder is 1.5%, ash content is 12.5%, and sulfur content is 0.75%.
[0025] (2) Mixing treatment. The ground coke powder and coal powder are mixed for 2h through a blender, wherein the coke powder is 20% and the coal powder is 80%. After the dry material is mixed, 1% water and 8% asphalt tailings are added, and the mixing is continued for 2 hours. The softening point of asphalt tailings is 120°C, ash content is 0.4%, and moisture content is 3.5%.
[0026] (3) Pressure granulation. ...
Example Embodiment
[0031] Example 2:
[0032] (1) Pre-grind the coke powder, coal powder and waste resin produced in the coking process to below 0.1 mm. Pulverized coal includes gas coal, 1 / 3 coking coal, fat coal, coking coal, and lean coal. The specific configuration is as follows:
[0033] Coal type gas coal 1 / 3 coking coal Fat coal Coking coal lean coal proportion 5%10%20%45%20%
[0034] The volatile content of coal powder is 24.0%, the ash content is 11%, and the sulfur content is 0.62%; the volatile content of coke powder is 2.0%, the ash content is 11.5%, and the sulfur content is 0.75%.
[0035] (2) Mixing treatment. The ground coke powder and coal powder are mixed for 4 hours with a blender, wherein the coke powder is 50% and the coal powder is 50%. After the dry material is mixed, 2% water and 5% waste resin are added, and the mixing is continued for 1 hour. The softening point of waste resin is 140°C, ash content is 0.5%, and moisture content is 5.0%.
[0036] (3) Pressure granulation...
Example Embodiment
[0041] Example 3:
[0042] (1) Pre-grind the coke powder, coal powder, and waste resin produced in the coking process to below 0.2mm. Pulverized coal includes 1 / 3 coking coal, fat coal, coking coal, and lean coal. The specific configuration is as follows:
[0043] Coal type 1 / 3 coking coal Fat coal Coking coal lean coal proportion 15%24%45%16%
[0044] The volatile content of coal powder is 20.5%, the ash content is 11%, and the sulfur content is 0.67%; the volatile content of coke powder is 1.8%, the ash content is 11.8%, and the sulfur content is 0.70%.
[0045] (2) Mixing treatment. The ground coke powder and coal powder are mixed for 2 hours through a blender, of which 70% coke powder and 30% coal powder. After the dry material is mixed, water with a mass proportion of 2% and 5% waste resin are added, and the mixing is continued for 3 hours. The softening point of waste resin is 140°C, ash content is 0.5%, and moisture content is 5.0%.
[0046] (3) Pressure granulation. T...
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