Reselection theory

In recent years, domestic and foreign scientific and technological workers have carried out a lot of research on improving the precision of re-election equipment sorting, increasing processing capacity and the joint use of re-election and other processes. The purpose is to use the re-election proce ...

The definition of "three violations" in the s…

Yungaishan Coal Mine Mine "three violations" is defined in the standard Chapter 1 Comprehensive Class First, serious "three violations" 1. No safety technical measures to organize the construction; 2. Arranging the employees who have not passed the procedures and measures to ...

What are the selection methods for spodumene?

Spodumene beneficiation methods are hand-selected method and the flotation, the flotation method is flotation method and reverse flotation, flotation is frequently used, its essence is finely ground ore, flotation spodumene In the alkaline slurry of sodium hydroxide or sodium carbonate, after high c ...

Whole mud cyanidation of fragile ore

Shenghailiena (Sint Helena) is a gold mine into production in 1951 of the old cyanide plant, due to increased ore, plant corrosion serious, obsolete equipment and gold recovery decline and other reasons, decided to build another new plant. The design of the new plant draws on the grinding practice ...

Tool types and material analysis and use in machine too…

Commonly used turning tools have the following types: 1 High carbon steel: High carbon steel turning tool is a kind of carbon steel with carbon content between 0.8% and 1.5%. It is used after quench hardening. The friction in the cutting process is easily tempered and re ...

Purification of rare earth metals by regional melting m…

After the metal impurity content of lanthanum, cerium, gadolinium, terbium purified by zone melting as shown in Table 1. The gas impurities H, O, and N in the table were analyzed by vacuum melting, and the metal impurities were analyzed by mass spectrometry. After the melt purification in the zone, ...

Safety measures for tunneling on the upper channel

Safety measures for tunneling on the upper channel I. Overview According to the mine production arrangement, after the leadership study decided, the team will construct 13071 on the trough. In the trough 13071 W503 forward measuring point 35m (horizontal distance) at the center of the opening trou ...