As basic chemical materials, many products produced by our company are used widely in the aspects of smelting and military industry. Because of strong oxidizing property, potassium permanganate and sodium permanganate are applied widely in the aspects of mineral smelting, military aviation fuel, aviation catalyst, military field operation, etc, e.g., functions such as removal of impurities, enhancement of catalytic activity and fire making in the field. In addition, chrome oxide green with high hardness and stability in preheating can be used as high-quality refractory material.
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| Removal of ferrum and manganese | Potassium permanganate/sodium permanganate has strong oxidizing property. Potassium permanganate/sodium permanganate is added, as oxidant, in the mineral smelting (wet smelting process) to oxidize divalent iron in acid solution into tervalent rion, and divalent manganese into quadrivalent manganese, and adjust the solution pH (3 - 5) to precipitate and remove iron and manganese. | In leach solution of wet smelting process, potassium permanganate is used as oxidant and sodium hydroxide as neutralizer. Potassium permanganate can be dosed 3 times: dose 40% of theoretical weight of potassium permanganate the first time, 30% of theoretical weight the second time and 40% of theoretical weight the third time, control the solution pH value between 3.0 and 5.0, stir it, hold the temperature between 70 and 85℃, make ferrous iron in the solution generate ferric hydroxide liquor, precipitate manganese (divalent manganese) in the form of manganese dioxide, separate it from the solution, and remove irron and manganese to minimum quantities. |
| Removal of ferrum and manganese | In wet smelting process of uranium metal, potassium permanganate is added as oxidant to oxidize divalent iron dissolved in acid solution into tervalent iron, and divalent manganese into quadrivalent manganese, control the solution pH value between 3 and 5, and precipitate iron and manganese completely so as to realize the separation of impurities. | In leach solution of wet smelting process, potassium permanganate is used as oxidant and sodium hydroxide as neutralizer. Potassium permanganate can be dosed 3 times: dose 40% of theoretical weight of potassium permanganate the first time, 30% of theoretical weight the second time and 40% theoretical weight the third time, control the solution pH value between 3.0 and 5.0, stir it, hold the temperature between 70 and 86℃, make ferrous iron in the solution generate ferric hydroxide liquor, precipitate manganese (divalent manganese) in the form of manganese dioxide, separate it from the solution, and remove irron and manganese to minimum quantities. |
| Catalyst | It is used for catalytic decomposition of liquid monopropellant and enhancement of catalytic activity. Manganese is a kind of transition metal. The transition metal oxide contains many kinds of oxidation state metal ions and lattice defects, in favor of adsorption and activation of organic gas and oxygen, making this material exhibit good catalytic activity in catalytic combustion. | Potassium permanganate can be used to prepare catalyst of transition metal oxide, and the activity of this catalyst can be enhanced by adding other metal oxides as usual. It is applied widely to military aviation catalyst, e.g., some potassium permanganate catalyst: it is mainly composed of iron powder into which iron pentacarbonyl is decomposed and which is granular by sintering and processing and is dipped in potassium permanganate solution and then dried to form catalyst, used for catalytic decomposition of hydrogen peroxide as liquid monopropellant so as to generate a great deal of gas |
| Fire making | It can be used to make a fire based on the principle that potassium permanganate/sodium permanganate touches, rubs or collides with organic substance to generate heat and release oxygen resulting in combustion; potassium permanganate/sodium permanganate can also be mixed with automotive anti freeze fluid for grinding based on the principle that anti freeze fluid is glycol. |
1. Mix a portion of granulated sugar with two portions of potassium permanganate/sodium permanganate, and grind them between dry wood chips. If it is dry, wood chips will burn quickly with short duration and good effect. 2. If no igniting material is available in the field but a fire needs to be made, mix anti freeze fluid remaining in obsolete car with potassium permanganate/sodium permanganate, grind them and parcel them with newspaper into a ball. Within 10 seconds, they must burn. |
| Main raw material of grease abrasive material | Chrome oxide green has the hardness approaching that of corundum, only less that that of diamond and more than those of quartz, topaz and zircon. It can be used to prepare grease abrasive materials like green oil, and for green polishing composition, etc. It is mainly used for polishing of chromium coating, ferrochromium, stainless steel, carbide alloy, etc and also for burnishing of metal coating. |
1. Green oil (one of main components of green oil: chrome oxide green): composed of compound mainly containing fatty acid and chrome, green solid factice, to be softened gradually at about 50℃. Preparation method of green oil: mix stearic acid, fatty acid, oleic acid and chrome oxide green in appropriate proportion and melt them down. |
| Manufacturing of metal and glass products | Chrome oxide green has the hardness approaching that of corundum, only lower than that of diamond and more than thoses of quartz, topaz and zircon. It can be used to manufacture lightfast coating and abrasive material. | / |
| Abrasive tool and grinding and polishing | Chrome oxide green has the hardness approaching that of corundum, only less than that of diamond and more than those of quartz, topaz and zircon. | It is applied to the grinding tools like abrasive tool for material grinding, polishing paste, polishing solution, abrasive tool for stone processing, abrasive tool for metal grinding and polishing and abrasive tool for polished tile and the grinding and polishing industry. The mirror effect is brilliant black, no white smog or scratch occurs absolutely, the light is reflected quickly and the brightness is high. |
| Main raw material of refractory material | stability, melting point 2,454℃ and boiling point 3,000℃, chrome oxide green itself has good heat resistance and can be used to prepare high-temperature resistant coating, and produce fire-resistant chrome material (melting point, density, iron impurities, silicon impurities, etc required for fire-resistant chrome thereinto), superheat resisting alloy, etc. Heat-resisting materials are required mainly in the following 2 aspects: 1) have good corrosion resistance at high temperature; and 2) have high strength and toughness. Refractory materials containing chrome oxide green are applied widely to furnaces in all kinds of industries. |
1. It can be used directly as refractory material, or form composite refractory material together with magnesia, alumina, etc. 2. Chrome oxide green is an important composition in heat resisting black coating, accounting for 20%-35%. 3. Remarks: new species of chrome (abroad): directly spray plasma over target material (metal or ceramic), forming protective film with very strong adhesion, giving the target material good performances like wear resistance, high temperature resistance and corrosion resistance. In addition, chrome can also be used as catalyst and its carrier to make composite oxides and as raw material to make chromic carbide, nitride, boride and silicide. |
