In order to understand the operational performances of bauxite based β-SiAlON new type raw material for practical application in the future,this paper studies the effects of bauxite based β-SiAlON on conventional physical properties,hot modulus of rupture,thermal shock resistance and slag corrosion resistance of MgO-SiO2-H2O combined Al2O3-MgO castables.The results showed that bauxite based β-SiAlON fines have minor negative effect on physical properties of the samples which were sintered at 1 550℃ for 3 hours and have little effect on hot modulus of rupture of the samples which were embedded carbon at 1 400℃,and improve the thermal shock resistance.Residual strength retention rate increased from 16.27% to 30.82% and slag corrosion resistance decreased obviously with the increase of β-SiAlON addition.

This paper introduced the sleeve lime kiln calcination process，the refractory structure and condition of the damage arch brick.Cause of the damaged arch brick  refractory was analyzed through a combination of sleeve lime kiln production process control，limestone raw materials and the refractory characteristics.According to the arch brick damage reasons,the corresponding solutions were proposed.

In this article,the impact of spinel additives amount on properties of corundum spinel brick is studied based on raw materials of white corundum, tabular corundum,spinel and alumina powder.By comparing the properties of the test samples, such as apparent porosity, bulk density,cold crushing strength,modulus of rapture under high temperature,thermal shock resistance and LF slag corrosion resistance,the result shows that all the properties of corundum spinel brick are excellent when the spinel additives remain between 10% to 20%.

Based on actual situation,this paper analyzes some reasons that cause Maerz kiln gas unit consumption higher.Under the precondition of ensuring stable quality of final product,a good result can be achieved such as gas input is cut and gas unit consumption is reduced by decreasing the channel temperature,strengthening the quality control of raw material,optimizing  relevant process operation and other measures.

A flat,hard alloy mould processing technology is introduced in this paper,this process effectively used the hard alloy with high wear resistance,and extremely clever solves the disadvantages of hard alloy poor toughness and easily broken.It has reached the goal of reducing the consumption of the mould，improving the inner and exterior quality of the production and improving the forming efficiency.