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A kind of production technology of ladle drainage agent

A production process and technology of drainage agent, applied in the field of production technology of ladle drainage agent, can solve the problems of product stability impact, low heat utilization efficiency, increased labor cost, etc., to reduce the number of operators, high heat utilization efficiency, lower The effect of labor cost

Active Publication Date: 2016-04-06
HENAN TONGYU METALLURGY MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of process requires many workers, which increases labor costs and human factors also have a great impact on product stability. In addition, this type of drying equipment uses coal to provide heat sources, which has low heat utilization efficiency and serious environmental pollution.

Method used

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  • A kind of production technology of ladle drainage agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The ladle drainage sand in a steel factory has a product formula that includes 60-70 parts of chrome ore, 5-15 parts of alumina balls, 20-30 parts of desert sand and 1-5 parts of a performance modifier. The performance modifier is A mixture of flake graphite, super carbon black and semi-reinforcing carbon black in any proportion; among them, Cr in chrome ore 2 o 3 The content of SiO is ≥45%, the particle size is 0.2~0.9mm, and the 80 mesh is ≤3%, the 20 mesh is ≤2%, the water content is ≤0.5%, by weight percentage; SiO in desert sand 2 The content of ≥94%, the particle size is 0.5~1.2mm.

[0040] Adopt the production technology of ladle draining agent of the present invention to produce above-mentioned ladle draining agent, can carry out as follows:

[0041] A. According to the particle size requirements of the raw materials in the product formula, sieve the chrome ore and desert sand to the corresponding particle size, measure and sieve the components of each raw mat...

Embodiment 2

[0043] The ladle drainage sand in a steel factory, the product formula is chrome sand 60~76%, of which Cr in chrome sand 2 o 3 The mass percentage content of ≥45%; sea sand 10~20%, alumina ball 4~9%, desert sand 4~9%, potassium feldspar 3~5%, carbon black 0.3~0.8%, flake graphite 0.3~ 1.0%.

[0044] The production process of the ladle draining agent of the present invention is adopted to produce the above-mentioned ladle draining agent, and its production steps are the same as in Example 1, except that in step B, during the drying process, the rotating speed of the drum kang is controlled at 450 rpm, and the The wind temperature is controlled at 200°C; in step G, carbon black and flake graphite are fed from a separate silo into a closed stirring tank, and the stirring time is controlled at 20 minutes to obtain a finished product.

Embodiment 3

[0046] The ladle drainage agent in a steel factory is made of the following raw materials: its mass percentage distribution is as follows: chrome sand 50-80%, white quartz sand 10-30%, fused magnesia 8-20%, and the particle size of each raw material is controlled within the required range Inside.

[0047] The production process of the ladle draining agent of the present invention is adopted to produce the above-mentioned ladle draining agent, and its production steps are the same as in Example 1, the difference is: step B, in the drying process, the rotating speed of the drum kang is controlled at 300 rpm, and the The air temperature is controlled at 150°C; in step G, the fused magnesia is discharged from a separate silo into a closed stirring tank, and the stirring time is controlled at 30 minutes to obtain a finished product.

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Abstract

The invention provides a process for producing a steel ladle drainage agent and belongs to the technical field of metal smelting. The process comprises the following steps: combusting gas provided by a gas generator in a hot blast heater to serve as a heat source, drying various raw materials in a roller flue, performing air cooling, conveying the materials into a corresponding storage bin, automatically blanking and adding carbon according to the formula ratio, uniformly mixing in a closed stirring tank, automatically packaging, and warehousing. According to the overall process, a full-automatic production line is adopted, the stable product quality is guaranteed, the number of operating personnel is reduced, the manual cost is reduced, and the influence of human factors on the product quality is greatly reduced. Meanwhile, dust removal equipment is arranged in the link that dust is easily generated in the roller flue and the closed stirring tank, so that the generated dust is collected and removed, the dust pollution is reduced, the environmental protection standard is improved, and clean and high-efficiency production is realized.

Description

technical field [0001] The invention belongs to the technical field of metal smelting, and in particular relates to a production process of a ladle drainage agent. Background technique [0002] The ladle drainage agent is a kind of unshaped refractory material, which is added into the upper nozzle of the ladle and can be automatically poured during the continuous casting ladle pouring process, so that the production process is continuous and the casting is guaranteed throughout the process. It is a necessary refractory material. [0003] Due to the overcapacity of steel in recent years, most iron and steel enterprises are in a state of meager profit or even a loss. Iron and steel enterprises have greatly reduced the purchase price of raw materials and fuels to increase profit margins. The price of raw materials such as chrome ore imported from South Africa is rising steadily. In order to increase profit margins, it is necessary to reduce costs in intermediate production link...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66B22D41/44
CPCB22D41/44C04B35/12C04B35/66C04B2235/3217C04B2235/3241C04B2235/3418C04B2235/3472C04B2235/424C04B2235/425C04B2235/5427
Inventor 朱世嘉王勇源李秀锋张国令陈守杰唐红波
Owner HENAN TONGYU METALLURGY MATERIALS GRP
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