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Method utilizing industrial waste to prepare non-asbestos calcium silicate board

A technology of industrial waste and calcium silicate board, applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problems of endangering human health, unfavorable protection of natural resources, high production costs, etc., to reduce pollution , Improving the competitiveness of enterprises and reducing production costs

Inactive Publication Date: 2013-02-13
三明市金宫硅酸钙板有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of traditional calcium silicate board usually uses a large amount of asbestos raw materials, and asbestos raw materials mainly have the following disadvantages: 1. After the release of fine asbestos fibers, they can be suspended in the air for a long time, and the human body inhales a certain amount of asbestos fibers. , lung cancer, pleural mesothelioma, peritoneal mesothelioma and gastrointestinal cancer and other diseases, which endanger human health; 2. Asbestos is a non-renewable resource, and a large amount of use is not conducive to the protection of natural resources
The disadvantages of the existing methods for preparing these asbestos-free calcium silicate boards are: due to the need to use a large amount of raw minerals and wood fiber raw materials, on the one hand, the production cost is relatively high, and on the other hand, it is not conducive to the production of raw ore and wood. protection of natural resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for preparing asbestos-free calcium silicate boards from industrial waste, comprising the following steps:

[0015] ① Pulping the waste cement paper bags in a pulper, filtering to remove slag, and then using a disc refiner to refine the pulp until the beating degree is 35-40°SR to obtain waste cement paper bag slurry;

[0016] ②Put the following raw materials by weight percentage into the batching machine for uniform batching: 6% of waste cement paper bag slurry, 45% of quartz tailings powder, 2% of calcium carbide mud, 4% of wollastonite powder, 5% of mica powder, 17.95% of cement, 10% slaked lime powder, 10% sanding powder, 0.05% polyacetamide, prepared into a mixture;

[0017] ③ put the mixture into the beater, add water for beating, the ratio of the mixture and water by weight percentage is: 15% of the mixture, 85% of the water;

[0018] ④ After sizing by head-flowing machine, plate-making machine-made plate, cutting machine, steam-curing in autoclave, dry...

Embodiment 2

[0020] A method for preparing asbestos-free calcium silicate boards from industrial waste, comprising the following steps:

[0021] ① Pulping the waste cement paper bags in a pulper, filtering to remove slag, and then using a disc refiner to refine the pulp until the beating degree is 35-40°SR to obtain waste cement paper bag slurry;

[0022] ② Put the following raw materials by weight percentage into the batching machine for uniform batching: waste cement paper bag slurry 10%, quartz tailings powder 35%, calcium carbide mud 8%, wollastonite powder 10%, mica powder 1.9%, cement 25%, 5% slaked lime powder, 5% sanding powder, 0.1% polyacetamide, prepared as a mixture;

[0023] ③ put the mixture into the beater, add water and beat again, the ratio of mixture and water by weight percentage is: mixture 10%, water 90%;

[0024] ④ After sizing by head-flowing machine, plate-making machine-made plate, cutting machine, steam-curing in autoclave, drying in dryer, edging by edger, and s...

Embodiment 3

[0026] A method for preparing asbestos-free calcium silicate boards from industrial waste, comprising the following steps:

[0027] ① Pulverize waste cement paper bags in a pulper, filter to remove slag, and then use a disc refiner to refine pulp to a beating degree of 35-40°SR to obtain waste cement paper bag slurry;

[0028] ②Put the following raw materials by weight percentage into the batching machine for uniform batching: 8.1% of waste cement paper bag slurry, 40.9% of quartz tailings powder, 5% of calcium carbide mud, 6% of wollastonite powder, 2.22% of mica powder, 23.9% of cement, 7% slaked lime powder, 6.8% sanding powder, 0.08% polyacetamide, prepared into a mixture;

[0029] ③Put the mixture into the beater, add water and beat again, the ratio of mixture and water by weight percentage is: mixture 12.5%, water 87.5%;

[0030] ④ After sizing by head-flowing machine, plate-making machine-made plate, cutting machine, steam-curing in autoclave, drying in dryer, edging b...

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Abstract

The invention provides a method utilizing industrial waste to prepare a non-asbestos calcium silicate board. The method includes the following steps: (1) producing waste concrete paper bag sizing agent; (2) dosing: 6%-10% of the waste concrete paper bag sizing agent, 35%-45% of quartz tailing mineral powder, 2%-8% of calcium carbide slurry, 4%-10% of wollastonite powder, 1%-5% of mica powder, 15%-25% of concrete, 5%-10% of slaked lime powder, 5%-10% of sanding powder, and 0.05%-0.1% of poly-acetamide; (3) pulping; (4) after starching by a pulp flowing machine, producing by a board-making machine board, cutting by a cutting machine board, steaming by a still kettle, drying by a drying machine, grind edging by an edge grinding machine, and sanding by a sander, the non-asbestos calcium silicate board is obtained. Due to the fact that the waste concrete paper bags, the quartz tailing mineral powder, the calcium carbide slurry and the like are used for raw materials for preparing the non-asbestos calcium silicate board, the method utilizing industrial waste to prepare the non-asbestos calcium silicate board not only is beneficial for saving natural resources such as raw ore and wood, but also is beneficial for reducing pollution from the waste to environment. Besides, the prepared products are low in cost, safe, and environmental friendly.

Description

technical field [0001] The invention relates to the technical field of preparation of asbestos-free calcium silicate boards, in particular to a method for preparing asbestos-free calcium silicate boards from industrial waste. Background technique [0002] Calcium silicate board is a common building material, widely used in interior partition walls, ceiling decoration, etc. The preparation of traditional calcium silicate board usually uses a large amount of asbestos raw materials, and asbestos raw materials mainly have the following disadvantages: 1. After the release of fine asbestos fibers, they can be suspended in the air for a long time, and the human body inhales a certain amount of asbestos fibers. , Lung cancer, pleural mesothelioma, peritoneal mesothelioma and gastrointestinal cancer and other diseases are harmful to human health; 2. Asbestos is a non-renewable resource, and its extensive use is not conducive to the protection of natural resources. [0003] With the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/30
CPCY02W30/91
Inventor 郑新才
Owner 三明市金宫硅酸钙板有限公司
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