First of all，the state and development of Indian refractory markets was reviewed，and steel and iron industry and cement industry were emphatically introduced.Then the development actuality of Indian refractories was discussed，such as raw materials for refractories,history of refractory production,import and export and refractory makers.Based on the above introduction，the current task and future outlook of Indian refractory industry were analysed.

This paper introduces the structure，installation position，laying methods and application effect of permeable bricks in ladle.The overall optimization design and carefully laying and maintenance on site can not only solve the difficulty of slag-discharge，but also can equalize the composition and temperature of hot iron，and improve the quality of hot iron.The service life of permeable bricks can be drastically increased by side installation at ladle wall.

On the basis of brief description of the present situation of carbon content and reactivity indexes in our country,it is put forward that there are three existing forms of carbon in the lime,i.e.impurity carbon,primary carbon and regeneration carbon.The formed cause and distribution features of various forms of carbon are analyzed.The morphology and regeneration carbon distribution of the lime produced from two kinds of lime kilns are determined by SEM and EPMA and the multiple kinds of technical measures for reducing different forms of carbon in metallurgical lime are put forward.

Differences of 1#，2# and 3# Marez lime kilns have been analyzed by means of program running for the cause of gas ring canal blockage.Measures have been taken with remarkable improvement.

In iron and steel industry，rotary kiln is an important equipment in sintering and steelmaking process，so the service life of the lining directly affects the smooth operation of the equipment.This article discusses the improvement of lining refractory bricks and its good using effects.

Ning steel active lime plant has two 600t·d-1 rotary kiln designed by ACRE，which were commissioned in June 2008，have been in stable operation at present with sound economic and technical indexes.The plant is not equipped with water washing facility for the raw materials due to limited space.Therefore the limestone from mine has to be directly put into use，which gives rise to serious scale formation.

This paper compares the principles of common drainer with leakproof drainer，points out the advantage of leakproof drainer，and expounds the key points of maintenance and cleaning and drainage operation.The leakproof drainer has good effect after being applied in calcinations mixed gas pipe network of Shaosteel.