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Method for manufacturing industrial filling material by using waste gypsum mold

A technology for making molds and waste gypsum, which is applied in the field of manufacturing industrial fillers by using waste gypsum molds, can solve problems such as difficult processing, and achieve the effects of improving the degree of anti-aging, reducing the cost of plastics, and increasing the unit weight of products

Inactive Publication Date: 2013-01-02
宜都市惠宜陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of producing sanitary ware in sanitary ware manufacturing enterprises, a large amount of gypsum is required. Generally, after 30-50 sets of sanitary ware are produced, the gypsum mold can no longer be used, so a large amount of waste gypsum is produced. Waste gypsum is regarded as a waste solid, which is difficult to handle. larger

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: A kind of method utilizing waste gypsum mold to manufacture industrial packing:

[0018] 1) Clean the surface of the waste gypsum mold and crush it. The waste gypsum is the gypsum mold discarded after the production of sanitary ware;

[0019] 2) Calcining the pulverized gypsum at a temperature of 400-420°C to form insoluble anhydrite;

[0020] 3) The insoluble anhydrite obtained after calcination is passed through ultra-fine grinding equipment, and the insoluble anhydrite is prepared into ultra-fine anhydrite powder, and the particle size of the ultra-fine anhydrite powder is controlled to be 3000-3200 mesh;

[0021] 4) Add a coupling agent to the ultrafine anhydrite powder for modification. The coupling agent is a titanate coupling agent. The amount of the coupling agent added is 1-2% of the mass of the ultrafine anhydrite powder. The temperature is 50-100°C, and the modified super anhydrite powder is the industrial filler.

Embodiment 2

[0022] Embodiment 2: a kind of method utilizing waste gypsum mold to manufacture industrial packing:

[0023] 1) Clean the surface of the waste gypsum mold and crush it. The waste gypsum is the gypsum mold discarded after the production of sanitary ware;

[0024] 2) Calcining the pulverized gypsum at a temperature of 480°C to form insoluble anhydrite;

[0025] 3) The insoluble anhydrite obtained after calcination is passed through ultra-fine grinding equipment, and the insoluble anhydrite is prepared into ultra-fine anhydrite powder, and the particle size of the ultra-fine anhydrite powder is controlled to be 3000-3500 mesh;

[0026] 4) Add a coupling agent to the ultrafine anhydrite powder for modification. The coupling agent is a titanate coupling agent. The amount of coupling agent added is 1.5% of the mass of the ultrafine anhydrite powder. 100-150 ℃, the modified super anhydrite powder is the industrial filler.

Embodiment 3

[0027] Embodiment 3: a kind of method utilizing waste gypsum mold to manufacture industrial packing:

[0028] 1) Clean the surface of the waste gypsum mold and crush it. The waste gypsum is the gypsum mold discarded after the production of sanitary ware;

[0029] 2) Calcining the pulverized gypsum at a temperature of 500°C to form insoluble anhydrite;

[0030] 3) The insoluble anhydrite obtained after calcination is passed through ultrafine grinding equipment to prepare the insoluble anhydrite into ultrafine anhydrite powder, and the particle size of the ultrafine anhydrite powder is controlled to be 3500-4000 mesh;

[0031] 4) Add a coupling agent to the ultrafine anhydrite powder for modification. The coupling agent is a titanate coupling agent. The amount of the coupling agent added is 2% of the mass of the ultrafine anhydrite powder. 120-150 ℃, the modified super anhydrite powder is the industrial filler.

[0032] The industrial filler obtained by the present invention, ...

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Abstract

The invention relates to a method for manufacturing an industrial filling material by using waste gypsum molds. The method comprises the steps that: the waste gypsum molds are subjected to surface cleaning and are crushed; the crushed gypsum is calcined, such that insoluble anhydrite is formed; the insoluble anhydrite obtained by calcining is processed by using an ultrafine grinding device, such that the insoluble anhydrite is prepared into ultrafine anhydrite powder; a coupling agent is added into the anhydrite powder for modification, and the modified ultrafine anhydrite powder is the industrial filling material. The invention provides a recycling method for waste gypsum molds obtained after sanitary ware production, such that environment pollution caused by solid waste of the waste gypsum can be avoided. The produced industrial filling material which is the modified insoluble anhydrite can be used as a functional filling material in fields of rubber, plastic, paper, and paint, for replacing calcium carbonate, calcined kaolin, lithopone, and part of titanium dioxide.

Description

technical field [0001] The invention relates to a utilization technology of waste gypsum, in particular to a method for manufacturing industrial packing by using waste gypsum molds. Background technique [0002] In the process of producing sanitary ware in sanitary ware manufacturing enterprises, a large amount of gypsum is required. Generally, after 30-50 sets of sanitary ware are produced, the gypsum mold can no longer be used, so a large amount of waste gypsum is produced. Waste gypsum is regarded as a waste solid, which is difficult to handle. larger. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a method for manufacturing industrial fillers using waste gypsum molds. [0004] The object of the present invention is achieved in that a kind of method utilizing waste gypsum mold to manufacture industrial packing comprises the following steps: [0005] 1) Clean the surface of the waste gy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/46
Inventor 祝必华焦新建朱万福
Owner 宜都市惠宜陶瓷有限公司
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