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Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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Application of Cementation Technology in a Chemical ...
Application of Cementation Technology in a Chemical ...

[2~3]. The micro-,etching, process can be divided into three sections: inner layer ,etching,, plated through hole and line ,etching,, and outer layer ,etching,. Among them, the plated through hole and line ,etching, process generates a waste ,copper,-bearing ,solution, with ,copper, content less than 30 g/L.

Controlled Electrodeposition of Uniform Copper Powder from ...
Controlled Electrodeposition of Uniform Copper Powder from ...

wastewater, treatment and materials fabrication. Experimental Reagents and materials.—The chemical reagents used in the preparation of synthetic solutions used in this study were all of an-alytical grade purity and used as received from Sigma Aldrich, in-cluding sulfuric ,acid, (98.0 wt%), ,copper, chloride (>99.99 wt%) and hydrochloric ,acid, (>99.0 wt%).

Recovery of Copper from Wastewater by Cementation Technique
Recovery of Copper from Wastewater by Cementation Technique

5/4/2014, · Rates of ,copper, ions removal from waste ,solution, by ,cementation,, using an iron rod that was covered with the screen, and the ,cementation, kinetics of ,copper, deposition from sulfate solutions onto iron were studied under different conditions of initial ,copper, ions concentration, initial pH of the ,solution, and ,solution, velocity. It was found that the rate of ,copper, ion removal by ,cementation, onto ...

Facile Construction of Copper Mesh Surface from ...
Facile Construction of Copper Mesh Surface from ...

Herein, facile strategies, ,acid etching, and PDMS coating, were reported for the construction of ,copper, mesh surfaces with special wettability from superhydrophilic to superhydrophobic. In the first ,acid etching,, ,copper, mesh surface exhibits a superhydrophilic and underwater superoleophobic properties, and the etched ,copper, mesh with high separation efficiencies (92%) was obtained.

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