Tungsten Oxide

Cyclohexanone is an important chemical raw material, widely used in fibers, synthetic rubber, industrial coatings, pharmaceuticals, pesticides, organic solvents and other industries. Cyclohexanone is the main intermediate for the synthesis of caprolactam and adipic acid, and it is also a raw material for the preparation of spices, rubber antioxidants, adhesives, vinegar and fruit preservative phenolic phenol, and can also be used as fine chemical auxiliaries. The traditional way to produce cyclohexanone is to produce cyclohexanol by hydrogenation of cyclohexanol, and then to reduce the cyclohexanol to the ring chamber by chemical method. There are two conventional preparation methods: One is in zinc catalyzed by 400 to 500 °C under oxidative dehydrogenation to cyclohexanone; The other was prepared by adding chromic acid catalyst with bleaching powder as oxidizing agent under weak acid condition. Among them, there is a problem, that is, there is no ideal catalyst, or the re

With the shortage of tungsten ore resources, the utilization of tungsten resources becomes more and more urgent. Waste tungsten alloy is one of the main sources of tungsten recovery, according to statistics, about 35% of the tungsten in Europe and America developed from waste tungsten alloy recycling. With the emphasis on tungsten resources in China, the recycle rate of tungsten resources in China has been increasing year by year, and it has reached 20%. In the tungsten recycling process, the sodium carbonate melting method of waste tungsten recycle process technology is more mature and wide applicability of the program, but it is inevitable that the leaching process in recycling of waste tungsten, scrap tin, phosphorus, chromium, molybdenum and other impurities may also enter coarse sodium tungstate solution, thus affecting the purity of tungsten products. The main impurities of the waste alloy are different, the treatment method varies according to material, here to introdu

Sodium tungstate is an important chemical raw material and an important intermediate product in tungsten metallurgy production. Generally speaking, industrial production of sodium tungstate mainly uses scheelite concentrate or wolframite concentrate as raw material, and the production cost is higher. In the tungsten concentrate production process, there are often some tungsten due to process or equipment reasons, lead to part of the tungsten ore grinding machine into powder or no successful flotation into the tailings, forming tungsten fine mud. The conventional recycle process of tungsten slime is tungsten slime - sodium tungstate - ammonium paratungstate. How can the sodium tungstate be recycled more efficiently by using tungsten slime? Compared with wolframite, fine scheelite slime is characterized by lower grade, more impurities, and more calcium containing molybdenum, which is more difficult to purify. In view of the above, we can use hot ball milling alkali deco

With the shortage of tungsten ore resources, the utilization of tungsten resources becomes more and more urgent. Waste tungsten alloy is one of the main sources of tungsten recycle. According to statistics, about 35% of the tungsten in Europe and America developed from waste tungsten alloy recycling. With the emphasis on tungsten resources in China, the recycle rate of tungsten resources in China has been increasing year by year, and it has reached 20%. In the waste recycling process of tungsten alloy technology, recycle process of waste tungsten by sodium carbonate smelting process is relatively mature and widely applicable, much as it is used, but a lot of problems also appeared in the actual production, the most troublesome is chromium. During the leaching of waste tungsten alloy by sodium carbonate smelting process, a large amount of chromium impurity elements also enter into sodium tungstate solution, which can not meet the purity of tungsten products. The chemica

Sodium tungstate is a kind of tungstate, and its chemical formula is Na 2 WO 4 . In nature, sodium tungstate appears to be colorless crystalline or white crystalline powder, and sodium tungstate is now known to replace sodium vanadate in the treatment of diabetes. However, with the study of sodium tungstate in the field of medical treatment, some American scholars have suggested that sodium tungstate can also be used to treat hyperlipidemia and obesity. Hyperlipidemia refers to the high level of blood lipids, can directly cause some serious harm to human health diseases, such as atherosclerosis, coronary heart disease, pancreatitis and obesity, this symptom is more common in the United States, which is related to diet. In medicine, high blood lipids are caused by elevated levels of triglycerides (TG) and total sterols (CHO) in the blood. In order to investigate the possibility of sodium tungstate in the treatment of hyperlipidemia, Chinese medical workers were tested w

Sodium tungstate is a kind of tungstate, and its chemical formula is Na 2 WO 4 . In nature, sodium tungstate is a colorless crystalline or white crystalline powder, and is often used as a plant protection, metal corrosion inhibitor and photocatalytic agent because of its non-toxic and environmental advantages. But is rarely known by people that sodium tungstate can also be used to treat diabetes. Diabetes mellitus is a group of metabolic diseases characterized by hyperglycemia. Hyperglycemia is caused by insulin secretion defects or impaired biological effects, or both. The consequences of diabetes are easy to cause eye, kidney, heart, blood vessels, nerves of chronic damage, dysfunction, such as high blood pressure, stroke, etc., is a healthy killer of middle-aged and elderly people. The traditional compound for the preparation of diabetes is vanadate, which is a simple inorganic vanadium compounds such as sodium vanadate, vanadyl sulfate etc.. Vanadium insulin has been widel

Sodium tungstate is a kind of tungstate, and its chemical formula is Na 2 WO 4 . The appearance is colorless crystalline or white crystalline powder, soluble in water, insoluble in ethanol, slightly soluble in liquid ammonia, when confront a strong acid it is broken down into tungstic acid dissolved in water. Sodium tungstate, as a raw material for chemical synthesis of tungsten, is an important intermediate in the transformation of tungsten into metals, usually, the intermediate product is broken down by alkaline process, and sodium tungstate is obtained, but in here sodium tungstate refers to crude sodium tungstate containing impurities. It also needs to be obtained by ion exchange, precipitation, extraction and other processes. Finally, APT is obtained by evaporation crystallization. Although sodium tungstate is an intermediate product of tungsten in the process of transformation, we use a lot of sodium tungstate, usually used in industrial products in tungstate refers to