Other

Angang Steel Company Limited

Yong Ma

Yue Hua Zhang

Xiaofeng Wang

Zhen Li

Zhigang Zhao

Yang Lin

Zhiwen Zhang

Fuping Tang

Xiaoshan Wang

Meng Guo

Guoqiang Xin

Jinsong Meng

Weizhi Yao

Peng Fei

Wenzhong Wang

Jianguo Ma

Yue Zhang

A method for preparing low-cost clean steel includes steps of: preliminarily desulfurizing iron melt: preliminarily desulfurizing in an iron melt channel during blast furnace tapping and during iron folding in an iron folding room, adding a desulfurizing ball into the iron melt during the blast furnace tapping or the iron folding; dephosphorizing and controlling sulfur: dephosphorizing and controlling sulfur during converter steelmaking, in such a manner that P&#x2266;0.014% and S&#x2266;0.004% during tapping; rapidly dephosphorizing by slag-forming: rapidly dephosphorizing by slag-forming during converter tapping, at a converter end point, controlling a C content at 0.02&#x2dc;0.10%, adding a dephosphorizing ball through an alloy chute during the converter tapping, blowing argon and stirring at the same time; purifying steel melt during RH refining: adding a purifying ball at a late stage of the RH refining when a vacuum degree is at 66.7&#x2dc;500 Pa; and continuously casting with whole-process protection.

Method for preparing low-cost clean steel

The present invention discloses a full reservoir sampling and testing apparatus having a ground surface testing and controlling tool () and a downhole tool (), the downhole tool () comprises a wireline bridle (), an adapter joint AH64 () connected to the wireline bridle (), a GR pup joint, an electric unit (), a single probe unit (), a pumping unit (), a dual packer unit (), and a multi sampling unit (); the ground surface testing and controlling tool () comprises a power supply controller, a computer system and a relevant control, analysis and interpretation software; an upper portion of the pumping unit () is connected to the single probe unit () and a lower portion thereof is connected to the multi sampling unit ().

Apparatus for sampling and logging on all producing zones of a well

Growing community of inventors

Anshan, China

Yong Ma