Other

Yang Lin

Yue Hua Zhang

Xiaofeng Wang

Zhen Li

Zhigang Zhao

Yong Ma

Zhiwen Zhang

Peng Fei

Xiaoshan Wang

Meng Guo

Jinsong Meng

Guoqiang Xin

Weizhi Yao

Fuping Tang

Wenzhong Wang

A structure for directly leading down the optical unit (OU) from the OPPC (optical phase conductor) cable, by the OU leading-down connector () invented recently, is used for separating the plastic-pipe OU from the OPPC cable installed on the tower, avoiding the splicing of fibers on the tower of the old technique. Therefore it is possible to assemble the OPPC cable (), the OU leading-down connector (), the preformed armor rod assembly (), the first link fitting (), the residual cable rack (), the second link fitting (), the insulator string () on the ground all together. Then the whole assemble can be erected on to the tower. Just as the conventional overhead power line construction. So it is simple and saving in work.

Structure for directly leading down optical unit of OPPC optical fiber cable and construction method therefor

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

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Guangzhou, China

Yang Lin