1. Xanthogen xanthogen (RO-CSSH) itself is an unstable colorless or yellow oily liquid that is slightly soluble or poorly soluble in water and may cause a strong explosion when decomposed. However, their alkali metal salts is quite stable solid. The sodium salt is easily deliquescent to form a dihydrate, and the potassium salt does not deliquesce. They are easily soluble in water, alcohol and acetone. In the collection performance of xanthate in complex polymetallic sulfide ore flotation, it is generally said that the longer the carbon chain in the molecule, the stronger the capture effect. In contrast, the short-chain yellow drug has strong selectivity. The long-chain yellow drug has poor selectivity. For example, ethyl sodium xanthate has the strongest selectivity, and isopropyl sodium xanthate has a low production cost and good harvesting power and selectivity in foreign countries; it is also the most widely used. The cost of sodium isobutyrate is also lower and the harvesting power is stronger. Potassium amyl xanthate collector selectivity, but also the strongest worst, often come with the collector pyrite, except add the appropriate inhibitor. The general concentration of xanthate is 10~20%, avoiding the use in strong acid pulp and preventing the decomposition of xanthate. The general dosage of xanthate is 23~90 g/ton ore. 2, the characteristics of xanthates xanthates are relatively stable properties can be vacuum distilled; as an oil at room temperature, insoluble in water, is generally added in a ball mill, the effective copper mineral collector, in The slurry added with lime is also a good collector for zinc . Do not collect pyrite. It can often improve the recovery rate of gold and silver in sulfide ore. 3. The oxygen in the trithiocarbonate xanthogen molecule is replaced by sulfur, which is a trithiocarbonate, which is also an effective collector for sulfide ore. Because their production cost is higher than the corresponding xanthate, It has not been applied and valued in the industry. In 1970, the trial use of sodium dodecyl trithiocarbonate (or potassium) as a collector of nickel sulfide ore and pyrrhotite did not attract attention. Until 1982, the patents of Belgium and other countries proposed the use of trisulfide. The carbonates (the following formula) floatation molybdenum ore can obtain good benefits and is used in the flotation industry. 4. The oxygen in the thiocarbamate xanthogen molecule is replaced by a nitrogen atom, which constitutes a thiocarbamate. They are a class of excellent xanthogen substitutes, which are more selective than xanthate and low in dosage (5-20 g/ton), and are not easily decomposed in acidic pulp. 5, black medicine and its derivatives Black medicine is an excellent collector of sulfide ore, its importance is second only to xanthate, it includes two major categories of cresol-based black medicine and alcohol-based black medicine. Compared with xanthate, cresol black medicine is not easy to float pyrite, pyrrhotite and unactivated sphalerite in alkaline pulp; cresol black medicine is stable in acidic pulp, under which pyrite is also At the same time float up. In addition, the ammonium salt of cresol black medicine has a weak foaming property. Alcohol-based black medicines are also not yellow pyrite in alkaline pulp. Wherein sodium aerofloat, # 208, # 211, # 238 aerofloat easily float galena, so that they are copper, lead sorted good selective collector.
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