Phosphogypsum high-strength wall brick and its production method

Abstract

The invention discloses a high-intensity ardealite wall brick and the producing method. And the composition weight ratio of semi-hydrated ardealite to anhydrous ardealite to flyash to coagulant is (70-85) : (12-20 ): (15-20 ): (15-25), where the coagulant is 12-20% silicasol water solution. And the invention uniformly blends them in sprinkling mode, mechanically places the mixture into a mould and shapes in high pressure, mechanically demoulds, and naturally hydrates to make it. And the invention firstly uses large amount of ardealite raw material in building materials, where the synthetic utilization of ardealite is up to 80%; and it is low-cost and saves land resources. After processed, it accords with national stipulated nuclear radiation indexes, has high hardness, reduces equipment investment and reduces cost of product.

Description

technical field [0001] The invention relates to a high-strength wall brick produced by a phosphogypsum full-dry method and a production method thereof, in particular to a high-strength wall brick produced by a full-dry method, and belongs to the technical field of building materials. Background technique [0002] Because solid clay red bricks consume a large amount of non-renewable land resources, in today's architectural design, the country has made legal or policy regulations according to the specific conditions of each region: the use of solid clay red bricks is prohibited and limited. Therefore, the construction industry is looking for alternatives, such as coal-dried bricks, sintered ordinary bricks, aerated blocks and ordinary chemical gypsum blocks. Traditional wall bricks are steam cured or sintered. However, these bricks have problems of poor strength and excessive nuclear radiation; a considerable part of the existing wall material production is "wet" production by...

AI Technical Summary

Problems solved by technology

However, these bricks have problems of poor strength and excessive nuclear radiation; a considerable part of the existing wall material production is "wet" production by pouring method, which consumes a lot of energy, and the output value of 10,000 yuan per ton of coal It is extremely low and does not conform to national policies; on the other hand, solving the environmental pollution caused by industrial waste phosphogypsum is an urgent problem to be solved at present. How to use industrial waste phosphogypsum is a problem to be solved by technical personnel in the field

[0003] According to the patent search, there is no all-dry process method and phosphogypsum wall bricks produced by phosphogypsum