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A kind of powdery gypsum for making polymer material products and its preparation method

A technology for polymer materials and gypsum, which is applied in the field of powder gypsum for making polymer material products and its preparation, can solve the problem of affecting the comprehensive utilization effect of natural gypsum or industrial by-product gypsum, and increasing the environmental pressure of gypsum waste residues. , adhesive properties, mechanical properties, compatibility and other issues are unstable, so as to improve comprehensive utilization, improve material compatibility, and improve mechanical properties and biocompatibility.

Active Publication Date: 2018-07-03
GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the application fields of gypsum products currently on the market are relatively narrow, which affects the comprehensive utilization effect of natural gypsum or industrial by-product gypsum, also restricts the development of wet-process phosphoric acid industry, and increases the environmental pressure and treatment of gypsum waste residue. The Economic Pressure of Waste Residue
[0007] Nowadays, the use of gypsum powder products in chemical, agricultural and other fields has become the main direction of gypsum application, but the current technology is not yet mature, which is mainly due to the bonding performance, mechanical properties, and compatibility between the existing gypsum powder and the matrix interface. Unstable performance and low activity of gypsum itself
In the existing technology, anhydrite and construction gypsum are often processed and reused through surface modification, calcination and other technologies, but the traditional method consumes a lot of energy, costs high, and takes a long time, so it is not conducive to the development of gypsum products

Method used

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  • A kind of powdery gypsum for making polymer material products and its preparation method
  • A kind of powdery gypsum for making polymer material products and its preparation method
  • A kind of powdery gypsum for making polymer material products and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0030] A kind of powdery gypsum used to make polymer material products. Weigh 30kg of dihydrate desulfurized gypsum as raw material, dry it at a temperature of 100°C to constant weight, add 3kg of additives to Mixing, wherein, the proportion of additives by weight is: 7kg clay powder, 17kg fly ash, 9kg sodium polyacrylate, 9kg methylcellulose, and then sent to a mixer with a rotating speed of 300r / min for 5min, and then sent to into a high-pressure mill for grinding to obtain powdered gypsum.

[0031] After testing, the powdery gypsum test results are shown in Table 1:

[0032] Table 1:

[0033] Fineness

Embodiment 2

[0035] A powdery gypsum used to make polymer material products. Weigh 30kg of α-state phosphogypsum as a raw material, dry it at a temperature of 60°C until it reaches a constant weight, and add 0.9kg of additives to dry it. Mixing, wherein, the proportion of additives by weight is: 11kg clay powder, 20kg fly ash, 7kg sodium polyacrylate, 6kg methylcellulose, and then sent to a mixer with a rotating speed of 500r / min for 8 minutes, and then sent to into a high-pressure mill for grinding to obtain powdered gypsum.

[0036] After testing, the powdery gypsum test results are shown in Table 2:

[0037] Table 2:

[0038]

[0039]

Embodiment 3

[0041] A kind of powdery gypsum used to make polymer material products. Weigh 30kg of natural gypsum in dihydrate state as raw material, dry it at a temperature of 40°C to constant weight, and add 1.5kg of additives Mixing, wherein, the auxiliary agent is in proportion by weight: 10kg clay powder, 9kg fly ash, 5kg sodium polyacrylate, 7kg methyl cellulose, then sent to the mixer with a rotating speed of 200r / min to stir for 8min, and then Send it to a high-pressure mill for grinding to obtain powdered gypsum.

[0042] After testing, the powdery gypsum test results are shown in Table 3:

[0043] table 3:

[0044] Fineness

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Abstract

The invention relates to the technical field of gypsum powder and manufacturing thereof, in particular to powdery gypsum for making high polymer material products and a preparing method thereof. Natural gypsum and / or industrial byproduct gypsum is used as the raw material, the raw material is subjected to dewater treatment to obtain a constant weight, and then high-pressure grinding is conducted after adding or not adding auxiliary materials, so that the powdery gypsum is obtained; the obtained powdery gypsum at least has the advantages that particle size is smaller than or equal to 600 meshes, no free water exists, mechanical property is high, and biocompatibility is high; the application requirements of high polymer materials can be met, and waste of industrial byproduct gypsum is avoided; besides, the preparing method is simple, requirements for equipment are low, operability is high, production time is short, cost is low, and bulk processing can be conducted.

Description

technical field [0001] The invention relates to the technical field of gypsum powder and its production, in particular to a powdery gypsum for making polymer material products and a preparation method thereof. Background technique [0002] Gypsum resources are one of the advantageous non-metallic minerals in our country. They are widely distributed. For many years, they have been mainly used in the cement industry as cement coagulant and mineralizer. In recent years, through continuous research on their properties, gypsum has been made into powder Materials have become a new trend, mainly because powder materials are easy to transport and store. [0003] At present, the powder products of natural gypsum and industrial by-product gypsum mostly have a fineness of 100-200 mesh, and are mostly used in the production of gypsum wall materials and mortar products in the construction field. [0004] For example, the "Eco-type High-Strength Modified Gypsum Powder" disclosed in the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B28/16
CPCC04B28/14C04B28/144C04B28/146C04B28/147C04B28/16C04B2201/50C04B14/10C04B18/08C04B24/2641C04B24/383
Inventor 向前勇
Owner GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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