Autoclaved lime sand brick and production method thereof

Abstract

The present invention discloses an autoclaved lime sand brick and a production method thereof, and solves the problems that in the prior art lime sand brick production cycle is long, the intensity is not high, the discrete degree is great and the like; the autoclaved lime sand brick is characterized in that: on the traditional basis of green sand and quick lime, a right amount stone chip is added, the quick lime is crushed, then the quick lime, the green sand and the stone chip are firstly mixed with water in an ash mixing machine, after 2.5 ~ 3 hours of hopper type digestion, secondary stirring is performed to make caking in the mixture broken and loose, the mixture is sent by a conveying system into a turntable type molding machine for pressing into green bricks, the pressed green bricks are sent by a traction machine into an autoclave for high temperature and high pressure autoclaving to produce the autoclaved lime sand brick with the strength more than 2 times of that of national standard of ordinary standard bricks.

Description

1. Technical field [0001] The invention belongs to a manufacturing method of building materials, and in particular relates to an autoclaved lime-sand brick and a production method thereof. 2. Background technology [0002] Autoclaved lime-sand brick is a dense silicate concrete product, the main raw materials are lime and green sand. The usual production process is to measure, stir and digest finely ground quicklime and green sand, pressurize them, and autoclave them for curing. The frost resistance, corrosion resistance, compressive strength and other properties of autoclaved bricks are better than those of solid clay bricks. The size of the brick is exactly the same as that of the ordinary solid clay brick, which is 240mm x 115mm x 53mm, so the autoclaved brick can directly replace the solid clay brick, and it is a new wall material that is vigorously developed and applied by the country. At present, there are mainly problems in the production of autoclaved lime-sand br...

AI Technical Summary

Problems solved by technology

At present, there are mainly problems in the production of autoclaved lime-sand bricks in my country: first, the grading of sand and gravel particles in raw materials is unreasonable, the quality of lime is low, and the ratio is unscientific; second, in terms of autoclaved curing, some enterprises only perform high-temperature curing instead of high-temperature and high-pressure Maintenance, even if some enterprises carry out high-temperature and high-pressure maintenance, the control of temperature, pressure and time is not standardized, so that the quality of the brick body cannot meet the requirements for use. The pressure of a single brick is generally below 100 tons, which brings serious problems to production safety. Hidden danger