the fire-resistant plastic materials have good performance of cold resistance and heat resistance and can greatly increase the service life of the furnace top.

The furnace top with refractory concrete is an important part of phosphorus furnace, which is as main equipment in yellow phosphorus production .

The rotating chute planetary gearing of eoordination type double pot bell less furnace top of 750m 3 blast furnace in Laiwu Iron and Steel General Works can make chute to do circular motion around contral line or blast furnace of to do inclined motion, and it can achieve ideal charging of throat.

Application of lengthened suspended brick to furnace roof for Guanggang rolling mill;

Mounting and retrofitting of furnace roof sealing of 300MW"W"-flame boiler;

The Service Life Research on Distributor Chute of Bell-less BF Top;

This article gives a systematic description of the reasons and preventive measures for the occurrence of intergranular stress corrosion crack in the steel shell of internal-combustion hot blast stove top, and introduces the purpose of heat treatment after welding and the corresponding heat treatment process based on actual project.

The paper introduces the main features and the theoretical principle of selfflowing castables,and studies the relations between selfflowing castables,grain shapes and addictive,and introduces the application of selfcastables in heating furnace roof and around watercooled pipes.