A kind of modified phosphogypsum imitation wood board and preparation method thereof

A technology of phosphogypsum and board, which is applied in the field of modified phosphogypsum imitation wood board and its preparation, which can solve the problems of phosphogypsum piled up like a mountain, and achieve the effects of low production cost, enhanced solidification performance, and enhanced comprehensive performance

Inactive Publication Date: 2016-10-05
GUIZHOU KAILIN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the object of the present invention is to provide a modified phosphogypsum imitation wood board with reasonable formula and simple preparation process and its preparation method, to solve the current situation that the existing phosphogypsum is piled up like a mountain, and to find a solution for the resource utilization of phosphogypsum. New ways to achieve greater economic and social benefits

Method used

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  • A kind of modified phosphogypsum imitation wood board and preparation method thereof
  • A kind of modified phosphogypsum imitation wood board and preparation method thereof
  • A kind of modified phosphogypsum imitation wood board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] raw material:

[0040] Phosphogypsum 30kg, fly ash 8kg, cement 6kg, fiber 0.5kg, yellow phosphorus slag 12kg and quicklime 1kg.

[0041] Preparation:

[0042] Ball mill yellow phosphorus slag into 80-mesh fine powder at 60°C to obtain slag powder, stir and react phosphogypsum, fly ash, cement, fiber, slag powder and quicklime at 40°C for 3 hours, and prepare the obtained mixture Naturally aging the material for 16 days, adding 10% water of the weight of the mixed material to the aged mixed material and stirring evenly, then pouring it into a mold, and obtaining the formed phosphogypsum base material after demolding, the phosphogypsum base material Send it into a curing room with a pressure of 0.3MPa and a steam temperature of 128°C for 19 hours, and slowly dry the cured phosphogypsum substrate at a temperature of 30°C until the moisture content is 3%, and then use 240# sandpaper Sanding to make it smooth to 0.5mm, then spray nitro wood grain primer with a thickness of...

Embodiment 2

[0045] raw material:

[0046] Phosphogypsum 50kg, fly ash 12kg, cement 10kg, fiber 3kg, yellow phosphorus slag 18kg and quicklime 4kg.

[0047] Preparation:

[0048] The yellow phosphorus slag was ball-milled into 100-mesh fine powder at a temperature of 70°C to obtain slag powder, and the phosphogypsum, fly ash, cement, fiber, slag powder and quicklime were stirred and reacted at a temperature of 50°C for 4 hours, and the obtained mixture was Naturally aging the material for 24 days, adding 15% water of the weight of the mixed material to the aged mixed material and stirring evenly, pouring it into the mold, and obtaining the formed phosphogypsum base material after demolding, the phosphogypsum base material Send it to a curing room with a pressure of 0.3MPa and a steam temperature of 132°C for 15 hours, and slowly dry the cured phosphogypsum base material at a temperature of 40°C until the moisture content is 5%, and then use 240# sandpaper Sanding to make it smooth to 2mm...

Embodiment 3

[0051] raw material:

[0052] Phosphogypsum 35kg, fly ash 9kg, cement 7kg, fiber 1kg, yellow phosphorus slag 14kg and quicklime 2kg.

[0053] Preparation:

[0054] Ball mill yellow phosphorus slag into 80-mesh fine powder at 62°C to obtain slag powder, stir and react phosphogypsum, fly ash, cement, fiber, slag powder and quicklime at 43°C for 4 hours, and prepare the obtained mixture The material is naturally aged for 18 days. Add water with a weight of 11% of the mixed material to the aged mixed material and stir evenly. Send it to a curing room with a pressure of 0.3MPa and a steam temperature of 129°C for 16 hours, and slowly dry the cured phosphogypsum base material at a temperature of 33°C until the moisture content is 4%, and then use 240# sandpaper Sanding to make it smooth to 1.5mm, then spray nitro wood grain primer with a thickness of 0.8mm, dry at 42°C for 17h, and then spray nitro clear primer with a thickness of 1.6mm, After the nitro clear primer is naturally ...

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Abstract

The invention discloses a modified phosphor-gypsum synthetic wood plate material and a preparation method thereof. The modified phosphor-gypsum synthetic wood plate material is prepared from the following components in parts by weight: 30-50 parts of phosphor-gypsum, 8-12 parts of coal dust, 6-10 parts of cement, 0.5-3 parts of fiber, 12-20 parts of yellow phosphorus slag and 1-4 parts of quick lime. By adopting the phosphor-gypsum as a main raw material to prepare the modified phosphor-gypsum synthetic wood plate material, the method disclosed by the invention can be used for improving the situation that the phosphor-gypsum is stacked like a mountain and having a great significance for protecting environment and realizing continuous development. Moreover, the produced modified phosphor-gypsum synthetic wood plate material has the advantages of being light, good in waterproofness and fireproofness, high in compressive strength, high in weather resistance and the like and can be widely used as indoor and outdoor decorative materials.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a modified phosphogypsum imitation wood board and a preparation method thereof. Background technique [0002] In the phosphoric acid production process, every ton of P produced 2 o 5 Five tons of phosphogypsum are produced by-product, and the annual by-production of phosphogypsum by medium-sized phosphoric acid production enterprises is about 3.5 million tons. So much phosphogypsum not only requires a large slag dump, but also causes water pollution. At present, the most commonly used phosphogypsum treatment methods are as follows: [0003] The first method: Phosphoric acid paste is used to backfill the pit. According to statistics, when phosphogypsum is not used to backfill the mine shaft, the filling cost of the mine shaft accounts for 1 / 3 of the mining, and the filling material accounts for 80% of the filling cost. If phosphogypsum is used to fill the mine shaft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B18/30C04B41/71B28B11/24
CPCY02W30/91
Inventor 向前勇杨永彬杨步雷王伟刘小成胡新菊李泽钢
Owner GUIZHOU KAILIN GRP CO LTD
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