Yellow phosphorus slag pavior brick and production method thereof

Abstract

The invention provides a yellow phosphorus slag pavior brick and a production method thereof, which relate to the technical field of a pavior brick production method technology. The pavior brick comprises the following raw materials in parts by weight: 15-20 parts of cement, 30-35 parts of sand, 15-20 parts of pebble, 20-25 parts of yellow phosphorus slag powder, 10-15 parts of granular yellow phosphorus slag, 0.5-1 part of raw pulverized limestone, 0.2-0.5 parts of a water reducer, 0.5-2.5 parts of a delayed coagulant, and 4-6 parts of water. The production method comprises the following steps: 1) mixing sand, pebble, the yellow phosphorus slag powder, the granular yellow phosphorus slag and the raw pulverized limestone and stirring the materials to obtain a mixture; 2) adding the cement, the water reducer and the delayed coagulant in the mixture, adding water for stirring to obtain a mixed slurry, performing compacting moulding on the mixed slurry by a building block forming machine to obtain the molded building block; and 3) performing maintenance on the molded building block for 29-30 days at the temperature of 25-27 DEG C and humidity of 92-95%. The method solves the problems of non-utilization of waste, low compressive strength, low flexural intensity and low abrasion resistance of the current pavior brick.

Description

technical field [0001] The invention belongs to the technical field of pavement brick production, and in particular relates to a yellow phosphorus slag pavement brick and a preparation method thereof. Background technique [0002] At present, every 1t of yellow phosphorus produced in China will produce 8-10t of yellow phosphorus slag. Due to the uncontrolled discharge of yellow phosphorus slag, it is very easy to cause irreversible pollution to the surrounding air, water, soil and ecological environment. At present, the effective utilization rate of yellow phosphorus slag is very low in China. According to incomplete statistics, the annual discharge of phosphogypsum waste residue in my country has reached more than 40 million tons, while the utilization rate is only 4.1%-4.5%. How to effectively deal with yellow phosphorus slag has become a difficult problem for phosphorus chemical enterprises. [0003] As a paving material, pavement bricks have a wide range of applicatio...

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Problems solved by technology

[0006] In order to solve the problems that existing pavement bricks cannot be reused, have low compressive strength, low flexural strength and low wear resistance, the purpose of the present invention is to provide a yellow phosphorus slag pavement brick and its preparation method. Yellow phosphorus slag pavement brick has the advantages of energy saving and environmental protection, high compressive strength, high flexural strength and high wear resistance