Tungsten Oxide

Inhibitor as well as known retarder, it can retardant or reduce the chemical reaction speed of the material, the function is the same as the negative catalyst. Tungsten flotation inhibitor can be divided into two types: Organic inhibitor and inorganic inhibitor.  The most commonly used for modified sodium silicate inorganic inhibitors, metal ion+sodium silicate, ammonium salt, sodium silicate, sodium silicofluoride, pyrophosphate, etc. They each have their own strong points. Here introduces a kind of inorganic inhibitors tungsten flotation-modified sodium silicate. Modified sodium silicate is  through the water glass for modification, acidification or the use of other agents in combination with the way to achieve the water glass can improve the inhibitory effect of calcium-containing gangue minerals purposes. Modified sodium silicate is the activator after decomposition of sodium silicate, it can produce a large number of single molecule silicate, the singl...

Commonly used tungsten flotation collector can be divided into anionic collector, cationic collector, amphoteric collector and nonpolar collector and complexing or chelating collector dosage form five categories, these collector is known as the fatty acid, phosphoric acid, chelation, amine, petroleum and so on. Full of beautiful collectors are always dazzling, objectively speaking, every collector has different strengths and weakness, for example, the fatty acid collector has strong ability of flotation but the ability of selectivity is poor. The selectivity of chelating collector is good but it is expensive. The selectivity of phosphoric acid, sulfonic acid, amine are good but the flotation ability is a bit poor and there exists environmental pollution. In great abundance of choices, it says suitable is the best, but it is hard to choose the right thing in one in a million, after continuously experiment again and again, people found that is also can go with “mix and match” sty...

In flotation system of two or more than two collector mixture, through collection makes collector produces generate synergies, this kind of tungsten ore flotation collector called combination collector in the industry.  Practice has proved that many function of combination has better and more effective flotation effect than single collector, there are many opinions as for the effect. Combinations collector mechanism has the adsorption effect is comparing the identity and the mechanism of the most studied, some scholars think that mineral surface formed in the process of mineralization, the processing is uneven physical and chemical reagents of adsorption of mineralogy basis. Adsorption effect including physical adsorption, double electrode layer, synonym ion exchange adsorption, molecular adsorption and chemical adsorption. Total absorption effect is a variety of collector to produce interaction between each other, eventually lead to promote and strengthen the flot...

From dressing industrial progress of history suggests that mineral processing reagents application significance is self-evident. Since its discovery in 1924 xanthate has the function of collecting sulfide ore, the development of the flotation industry started by leaps and bounds, the inundated mineral processing reagents has been invented and created with a steady stream. However, how many dressing agent are they? How to classification, which is often confused about. In western countries, most of dressing agent were issued in the form of “patent certificate”. Therefore some names are quite chaotic, sometimes it only some numbers. At the same time, the dressing agent is more cheaper in general, other impure industrial by-product, its composition is not very sure; And several kinds of medicine emulsion mixture or the product of interactions, often name after the new potion. According to a German experts statistics, there are 7702 species the name of the material can be us...

In recent years, the fatty acid with microbial fermentation system of sulphide ore collector, has attracted a lot of interest, because it is a fatty acid collector substitute another very promising source, and confirmed by experiment. The effect is better than the average oleic acid substitute. Y-17 fatty acid sodium salt is the system of a microbe scheelite flotation collector developed by our country. Y-17 fatty acid sodium salt is in1974, Shanghai institute of organic chemistry research units such as microbial collector of success, is a kind of mixed fatty acid sodium salt. Its appearance is soft solid tan, containing unsaturated acid about 79%, hydroscopicity,soluble in water, its aqueous solution, 5% still not set at 5°C, used as a collector can use cold water can also be used as configured to any concentration of less than 10% of the hot water.  Hunan some tungsten mines to use Y-17 grade of WO 3  3.91% fatty acid sodium salt heating flotation of ...

In our country the white tungsten deposit is mostly a skarn shape deposit, this kind of characteristic of scheelite ore bed is “lean, multiple, thin, miscellaneous”, especially the “miscellaneous”, caused a variety of obstacles to white tungsten ore dressing. Most white tungsten deposit are associated with calcite, fluorite, barite, such as calcium containing gangue, because of the flotability is close to scheelite so is hard to separate. For many years Petrov method is commonly used for the white tungsten flotation method, namely high temperature flotation process, this process must be heating flotation, high energy consumption, the operation is complicated. Following the development of the technology, finally developed a flotation process at room temperature in the 70s.The most representative of flotation process at room temperature is 731 flotation method at room temperature and method of lime, here’s to emphatically introduce lime method. Scheelite flotation pro...