Method for preparing steam-curing building block through wet-milling waste glass

Abstract

The invention relates to a method for preparing a steam-curing building block through wet-milling waste glass. The method comprises the following steps of feeding 50 to 70 parts by weight of waste glass and 10 to 20 parts by weight of acetylene sludge into a crushing machine for crushing, then feeding into a wet type ball mill, adding water according to the proportion of 0.4 to 0.6 of weight ratio of water to material, and then adding 0.5 part of grinding aid for ball milling to obtain a slurry; and placing the slurry in a stirring machine, adding 4 to 6 parts of cement, 20 to 30 parts of coal ash, 2 to 5 parts of excitant and 1 to 2 parts of admixture for stirring and forming, carrying out four stages of standing, warming, keeping constant temperature and cooling, and obtaining the building block through steam curing. According to the method for preparing the steam-curing building block through the wet-milling waste glass provided by the invention, waste glass powder is refined through a wet-milling process, and the pozzolanic activity of the waste glass powder is fully played, so that the building block can be prepared by adopting a non-steam process, the energy consumption is low, the production cost is low, and the maintenance period can be shortened; the coal ash and the acetylene sludge are added, so that the prepared building block has excellent performances; and a large number of wastes are utilized, so that the solid waste utilization rate is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for preparing steam-cured blocks with wet-milled waste glass. Background technique [0002] Due to the large amount of waste glass, the recycling and utilization of waste glass has become an urgent environmental problem to be solved all over the world. Since the hardness modulus of glass is similar to that of natural sandstone, and the density between the two is also close, it is possible to use waste glass to replace the increasingly depleted natural sandstone. In addition, glass itself contains a large amount of silica and is amorphous and non-crystalline, which also makes it possible to be an auxiliary cementitious material for concrete. Therefore, the rational development and utilization of waste glass and its application in engineering can not only relieve the pressure of waste glass treatment and the exhaustion of sand and gravel resources c...

AI Technical Summary

Problems solved by technology

There are following problems in making blocks with this method: firstly, the grinding efficiency of dry grinding is low, if the grinding time is too short, it is difficult to achieve superfineness, and the activity of waste glass powder cannot be stimulated; if the grinding time is increased too much, it will not only increase In addition, the agglomeration effect of fine particles of waste glass powder makes the particle size larger and the particle size range wider, resulting in a faster loss of activity

Secondly, the moisture content of the original raw material is relatively high, and it needs to be pre-dried before use, which greatly increases the energy consumption of the raw material

Finally, the process of autoclaving required for the preparation of autoclaved blocks takes a long time, and the cost of mechanical equipment is high, and there is a certain risk in manual operation