Numerical simulation and industrial test of boreholes destressing technology in deep coal tunnel;

First industrial test of metallocene adduct technology;

The industrial test on continuous smeltin of compact zinc slag using fuming furnace without heat source is described,the feasibility and economy of all cold charging for continuous smelting of compact zinc slag are discussed.

To reduce blending cost and consume more gas coal and gas-fat coal produced from Shandong province,and thereby to increase the production of BF gas,ease the shortage of coke oven gas,Jinan Iron and Steel Company carried out an industrial experiment on Feb.

Through making industrial experiment of zinc nitrate with existing equipments,the industrial experiments of calcium ammonium nitrate and nitro-composite fertilizer show that the production of a calcium ammonium nitrate and nitro-composite fertilizer exist many problems,and so it is need to improve the process and increase equipments.

This paper describes the industrial experiment of regenerative removal agent to remove lead.

The commercial experiment of using organic binder contained typ- modified bentonite to replace common calcium bentonite were conducted in 8m2 shaft furnace,Xuan Hua I&S Company.