High-strength sintered brick and production method

Abstract

The invention provides a low-cost, good-wearability, high-intensity sintered brick, comprising: granulated blast furnace titanic slag 30-80 wt%; gangue or coal cinder 15-30wt%; sand 0-20wt%; clay or shale 0-42 wt%; and mineralizer 0-15wt%, where the TiO2 content of the granulated blast furnace titanic slag is 15-25%. And its producing method comprises the following steps of: 1) airing and then screening gas mud, converter mud, vanadium-containing slag and granulated blast furnace titanic slag; and crushing the clay, shale and sand; 2) weighing raw materials, and feeding them into a mixing mill or double axis blender; 3) making semidry pressure molding or extrusion molding on blank materials and obtaining brick blanks; 4) firing the brick blanks in a reducing or oxidizing atmosphere at 1000- 1100deg.C. And it has good wearability and low cost. And the invention utilizes the granulated blast furnace titanic slag in 30-80%.

Description

technical field [0001] The invention relates to a building material and a production method thereof, in particular to a high-strength fired brick and a production method thereof. Background technique [0002] At present, ordinary blast furnace slag is mainly used as concrete admixture, slag cement mixture, etc., while granulated blast furnace titanium slag has the characteristics of low radioactivity, low hydration activity, high melting temperature and short slag properties, so that blast furnace slag cannot be used as ordinary high-grade blast furnace slag. The slag is widely used in cement and concrete, and the effective utilization of granulated blast furnace titanium slag has become an important issue. [0003] Public documents on the application of granulated blast furnace titanium slag in building materials include: Sun Xiwen et al. Experimental Research on the Production of Concrete Hollow Blocks from Panzhihua Iron and Steel’s Titanium Slag (Journal of Southwest Un...

AI Technical Summary

Problems solved by technology

The above public documents are all about the application of granulated blast furnace titanium slag in unburned bricks, cement, concrete, and mortar. In essence, the hydration activity of blast furnace slag is used, and there are small dosage and limited application in application. However, in addition to the above-mentioned problems, the non-fired solid bricks and hollow concrete blocks made of granulated blast furnace titanium slag also have problems such as high product price, poor durability, late cracking and leakage of the wall. Therefore, granulated blast furnace titanium The comprehensive utilization of slag has been lacking in effective ways

[0004] Sintered bricks belong to the bulk of the basic wall building materials. They have the characteristics of stable performance and good durability. Therefore, they have always been the leading product in wall materials. However, because clay and shale are generally used as raw materials, a lot of land resources are wasted.