The wall temperature of oxygencoal lance has been calculated by a developed mathematical modelExperiments have been carried out to verify the results at Xiangtan Iron and Steel Corp.

Centrifugal Casting Technology for HighQuality Tin Bronze Sleeve;

The paper introduces extrusion joint technology for sleeve of ribbed reinforcing steel bar such as definition,application scope,main advantage,matters to be attended to in course of construction and some requirements on quality.

In light of serious defects existing in the original design of the exit sleeve roller table of the CA line,a comprehensive revamp on the sleeve exit roller table has been carried out on the basis of the theoretical analysis and statistics on the reactive data.

Analysis and experiment of the optimum shrink range between chain plate and bush for agricultural machinery chain by using finite element method;

Three-dimensional modeling software was used to establish interior flow field model of a generally used bush-type control valves.

In retrospect of the production practice of the two annular shaft kilns in last three years,we ve summarized a series of precious experience,not only in the process of producing high quality,active metallurgic lime,but also in the maintenance of annular shaft kiln.