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Production technology for drainage agent

A production process and technology of drainage agent, applied in the field of production technology of 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, and reduced labor. cost effect

Active Publication Date: 2016-06-29
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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  • Production technology for drainage agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The ladle drainage sand in a steel factory has a product formula that includes 60 to 70 parts of chrome ore, 5 to 15 parts of alumina balls, 20 to 30 parts of desert sand and 1 to 5 parts of a performance regulator. The performance regulator 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 ≥ 94%, the particle size is 0.5 ~ 1.2mm.

[0039] Adopt the production technology of drainage agent of the present invention to produce above-mentioned drainage agent, can carry out according to the following steps:

[0040] 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 co...

Embodiment 2

[0042] Ladle drainage sand in a steel factory, the product formula is 60-76% chrome sand, 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%. Adopt the production process of drainage agent of the present invention to produce above-mentioned ladle drainage agent, its production step is the same as embodiment one, difference is: step B, in drying process, the rotating speed of roller kang is controlled at 450 rev / min, and wind The 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

[0044] The ladle drainage agent of 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.

[0045] 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 production technology for a drainage agent and belongs to the technical field of metal smelting. Gas provided by a gas generator is combusted in a hot blast stove to serve as a heat source, and various raw materials are dried in a heatable roller brick bed firstly; then the raw materials are cooled through air cooling and conveyed into corresponding bins, automatic discharging and carbon adding are conducted according to the ratio of a formula, and even stirring is conducted in a closed stirring tank; and then automatic packaging is conducted, and warehousing is conducted. A full-automatic production line is adopted for the integral technology, stability of the product quality is ensured, in addition, the number of working personnel is reduced, and the labor cost is reduced; and meanwhile, the influences of human factors on the product quality are also greatly reduced, dust removing devices are arranged for links where dust is liable to be generated on the heatable roller brick bed and the sealed stirring tank so that generated dust can be collected and removed, dust pollution is reduced, the environment-friendly standard is improved, and clean and efficient production is achieved.

Description

technical field [0001] The invention belongs to the technical field of metal smelting, and in particular relates to a production process of a 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 links. The...

Claims

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Application Information

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IPC IPC(8): B22D41/44C04B35/66
CPCB22D41/44C04B35/66
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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