A kind of imitation pine wood decoration material and preparation method thereof

Abstract

The invention discloses a pine-like decorative material and a preparation method thereof. The pine-like decorative material is prepared from the following raw materials in parts by weight: 60-70 parts of ardealite, 8-12 parts of coal ashes, 20-30 parts of yellow phosphorus slag and 1-5 parts of quicklime. The method comprises the following steps: firstly, carrying out ball-milling on the yellow phosphorus slag, and mixing the obtained slag powder with ardealite, coal ashes and water; carrying out natural ageing treatment; adding water, stirring evenly, and pouring into a mold; and conserving the molded ardealite base material, and then carrying out spraying treatment. The pine-like decorative material is mainly prepared from ardealite so that the current situation that ardealite is piled up like a mountain is solved; therefore, the pine-like decorative material is of great significance for environment protection and realization of sustainable development.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a pine imitation decorative material 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, the fil...

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Problems solved by technology

The crystal form of phosphogypsum is the same as that of natural gypsum, which is a prismatic or columnar plate crystal, and its chemical composition is basically similar to that of natural gypsum. Phosphorus and organic impurities will prolong the hydration time of cement, reduce the early strength and prolong the setting time, so phosphogypsum cannot be directly used as a retarder for cement

Phosphogypsum needs to be processed. The current common method is to process phosphogypsum through washing, pretreatment, drying and calcination. This method is low in cost to obtain cement retarder, but the process of producing cement retarder from phosphogypsum is long. , the equipment investment is large, and the flocculant still inevitably contains phosphorus pentoxide and fluoride, which makes the hydration time and coagulation time of cement longer

[0005] The third method: making ammonium sulfate and calcium carbonate from phosphogypsum. This method uses ammonia and carbon dioxide to convert phosphogypsum into ammonium sulfate and calcium carbonate. Big

At present, phosphogypsum is usually mixed with a small amount of cement, pulp, fiber reinforced materials, etc., and then pressurized to make phosphogypsum fiberboard. Because phosphogypsum itself has no gelling properties, high water content, and contains various impurities, etc. , the phosphogypsum imitation pine decorative material produced by this method has low wear resistance, weather resistance, compressive strength and other properties, and it is difficult to meet the requirements for the use of architectural decorative materials

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