Study on Flotation Separation Experiment of Molybdenite Using New Type Collector

Abstract

The flotation process of molybdenum ore from Liaoning in China with a new collector DMC is investigated. The results show that the collector DMC has stronger collecting power and better selectivity for molybdenite. Compared with traditional kerosene and xanthate flotation,this process using the new collector could have a good index with 60% sodium silicate. The closed-circuit test results are as follows:the molybdenum concentrate of 53.04% with the molybdenum recovery of 95.02% is obtained.

Experimental Study on Improving Concrete Carbonation Resistance with Silane Impregnation

“…Concrete carbonation is an important prerequisite for reinforcement corrosion in the general atmospheric environment. Reinforced constantly corrosion causes stress area and cohesive force reduced, and a series of adverse consequences happened such as concrete protection layer cracking, longitudinal cracking and spalling, structure carrying capacity and durability reducing [1]. So, it has important practical significance researching concrete carbonation for buildings durability assessment, buildings repair and reinforcement or buildings durability design.…”

Current Situation of Flotation Process and Reagents of Cu-Mo Sulphide Ores

“…Kerosene is one of the most widely used non-polar hydrocarbon oil collectors in molybdenite flotation. The main component of kerosene [6] is C 11 ~ C 16 alkane.It is basically insoluble in water and only has collecting performance. When the content of aromatic hydrocarbon is large, It has a certain foaming performance.…”

“…2) Nitrogen-containing compound Nitrogen-containing compound are mainly NaCN; Na 4 Fe(CN) 6 ;Na 3 Fe(CN) 6 ;KCN;Zn(CN) 2 ;Ca(CN) 2 and so on.Cyanide is an effective depressant in the separation of nonferrous metal sulfide minerals. The depressing mechanism is CN -forms a hydrophilic insoluble cyanide or complex with metallic minerals.Cyanide has the advantages of low dosage and great depressing, but its toxicity is strong and harmful to the environment, limiting its application in production.…”