On the basis of summarizing the pelletizing process characteristics of the Grate-Kiln system,mass and thermal balance measurement in the annular cooler of the Grate-Kiln system on the Shougang Minng Co.

The refractory material coat on the side sealing plate in first cooling hood of annular cooler was originally the entity pour material.

Recent years Angang s sintering production made use of the heat of annular cooler、Metallurgical waste material、 the new type of ignition furnace and the sintering technology of high layer of material,Not only the quantity and quality of sinter became better,but also the energy got decrease.

The skid in operation of circular cooler in sintering system is analyzed,and automatic speed-tracing supervisory control realized by means of a skid supervisory system.

In accordance with the site measurement and data displayed in the main control room,the linear analysis was made for the speed relation of the three major equipment like traveling grate,rotary kiln and circular cooler during operation,a unified determination of the three major equipment speed was made preliminarily through calculation of linear relations.

Pointed at the phenomenon of non-uniformity distribution of pelltes compression strength presented in SHOUGANG,the wind distribution in circular cooler was finite element analysed.

The feed drive system of a precision cold ring rolling mill adopts AC servo motor and mechanical transmission, rather than conventional electro-hydraulic actuator.

The cold ring rolling mill should not only have satisfied kinematical performance, but also good dynami.

In this paper, the analysis and design of the tightening bolt joints were carried out about the housing of precision cold ring rolling mill, and the mechanical behaviors of the housing when it was working in six cases of preload were analyzed by the method of three-dimension finite element, the optimal preload and coefficient of tightening are presented, the magnitude of system .

Point at the air-leakage problem of sealing device of forced draft circular cooler in MAGANG №1 Ironmaking Works,the structure defects of traditional sealing device were analyzed.

Based on the problems of down draft circular cooler and the production situation of MAGANG №1 Ironmaking Works, the necessity of modifying the existed down draft circular cooler was expounded and the thinking and scheme of cooler modification were presented.