At present,double shaft kiln is an advanced lime kiln technology with high automation and strict process control requirements in China.The development of the control system is an important part in technology of double shaft kiln.Siemens PLC platform is a widely applicable control system development platform.Based on it,the control system of the double shaft kiln is successfully developed,which can template the design and application system and provide support for scale development and optimization of the control system.

Anchors serve to strengthen the role of robustness in monolithic refractories,so its performance has a direct impact on the effect of the use of monolithic refractories.Overall lining nickel-iron anchor kiln used for U-,Y-,V-,double R-type or anchor bricks.After using the appropriate anchor lining integrity,long kiln life,high capacity,low cost.

During the heating-up process,the low temperature heating-up apparatus has some problems,including wide flame fluctuations,easliy be blown-out by combustion air and unstably control on kiln temperature. Based on that,a design improvement on nozzle develops a set of heating-up apparatus with simple structure,high automation and continuous low temperature workability.

Based on technological requirements for the preparation of ceramic welding repair materials，through the careful selections for refractory raw material of high alumina ceramic as well as its grain size distribution and scientific calculation on fuel quantity，a more proper composition is determined by visual inspection and physical and chemical indexes with less welding repair tests，the performance indexes of the welding repair product are close to or above the original high alumina brick which can meet the technical requirements of practical application.

To prevent molten steel of the steel ladle nozzle from freezing,stuffing sand need to be filled in the nozzle.It is known that the main factors to affect the automatic open ratio of stuffing sand are the material and particle sizes of stuffing sand and continuous casting technique as well as the filling effect of the stuffing sand.This paper introduces several filling modes of stuffing sand and then compares them with each other.

In the design of new type of 7.63m large coke oven and top combustion hot blast stove, a lot of molding difficult special shape bricks are required, which brings great difficulties to production and quality management. Because the original production process has been unable to meet the needs of the production and quality management, so a new production process of raw materials is developed to guarantee the good plasticity of raw materials to be shaped and meet the requirements of production and prepare products with high compressive strength and low porosity.

Light-weight silica bricks were prepared with waste silica brick clinker with the critical particle sizes of 1.65mm, 2.18mm and 3～5mm. The effect of different critical particle sizes on the composition, appearance and performances of light-weight silica bricks was studied, and the critical particle size of the silica brick clinker required for preparation of the best light-weight silica bricks was determined.