The nitriding furnace technology was analyzed and compared in terms of layout, furnace charging method, cooling method, temperature control scheme, nitriding process scheme and environmental protection and energy saving characteristics, and pointed out the advantages and disadvantages of various sc

Yesterday it was learned from the Municipal Bureau of Education that the Municipal Education Bureau, the Traffic Police Bureau of the Municipal Public Security Bureau, and the Municipal Communications Commission jointly issued the “Notice on Doing a G

Abstract: With the increase in world demand for gold production, gold production scale continues to expand, bring to humanity and worsening environmental pollution, causing the majority of scientists engaged in gold extraction attention, study and have taken measures to control And actively develop

When cyanide leaching, the concentration of slurry and the content of slime will directly affect the diffusion rate of cyanide and oxygen, the contact of gold particles with the solution, and hinder the relative flow between the gold particles and the solution, thereby reducing the gold Leaching ef

The traditional gold extraction method is cyanidation, which produces a large amount of gold smelting cyanide tailings every year, and with the deepening of gold mining, the output of refractory gold mines is getting larger and larger. In order to improve the extraction of gold and reduction of gold

    First, the pressure on the mine roadway in the bottom column The bottom-column caving mining method uses the ore to be released through a mineway provided in the bottom column. Therefore, the stability of the mine roadway in the bottom column directly affects the safety and economic b

I. Overview     Compared with other beneficiation methods, the re-election process has lower cost and less environmental pollution. Therefore, in the optional study, the re-election test should be considered first for any ore that may be selected by re-election method. Due to the relat

Here is a brief introduction to the rod media of the rod mill. Rod mill grinding media for the long metal rod, the rod diameter of the work medium, and more generally in the production of 50 ~ 120mm; frangible when worn too thin, too thick smashed grinding plate is easy. The length of the rod medi

The beneficiation plant designed by the Beijing Nonferrous Metallurgy Design and Research Institute in 1957, the design capacity of 4400t / d. (1) the nature of the ore; ore processed plant genus was allowed to warm dip seemed layered copper deposit account. Metallic minerals mainly include chalco

"In the voting just ended, a total of five members voted, and three members found that there was no substantial damage and threat of damage, victory!" Beijing time at 0:17 on the 23rd, the tires of the two opposing cases WeChat group finally came The news of the lawyer in front. One year

On February 23, 2017, Yunnei Power held the 2017 Parts Dealer Conference with the theme of “Building Channels to Manage New Developments within the Cloud”. Mr. Dai Yunhui, deputy general manager of the company and deputy director of the State-level Enterprise Technology Center, an

The rapid expansion of the lithium-ion battery industry has driven the rapid growth of the entire diaphragm industry. According to the starting point study (SPIR) statistics, the global lithium-ion battery separator production increased from 500 million square meters in 2010 to 1.42 billion square