Ferroalloys, a
broadly defined ferroalloy is a product that is used as a deoxidizer, elemental
additive, etc. in steelmaking to add iron to certain properties or to meet
certain requirements.
Property: The main element of the ferroalloy generally
has a high melting point, or its oxide is difficult to reduce, and it is
difficult to refine the pure metal. If it is together with the iron, it is
easier to reduce the smelting. The use of ferroalloys in iron and steel
smelting, in which iron is not only harmless, but because of the fusing of
molten steel is more favorable. Therefore, deoxidation and alloying in the
steelmaking process are mostly added in the form of iron alloys. Iron alloys
are generally brittle and cannot be used as metal materials.
Purpose: As a deoxidizer for steelmaking, silicon
manganese, ferromanganese and ferrosilicon are the most widely used . As strong
deoxidizers, aluminum (aluminum iron), silicon calcium, silicon zirconium, etc
are used . Commonly used alloy additives
are: ferromanganese, ferrochromium, ferrosilicon, ferrotungsten,
ferromolybdenum, ferrovanadium, ferrotitanium, ferronickel, niobium (neodymium)
iron, rare earth iron alloy, ferroboron, ferrophosphorus and so on. A variety
of ferroalloys, in accordance with steelmaking needs, are regulated in many
grades based on the content of alloying elements or the level of Carbon
contained, and the impurity content is strictly limited. Ferroalloys containing
two or more alloying elements are called composite ferroalloys. The use of such
ferroalloys can add deoxidizing or alloying elements at the same time, which is
beneficial to the steelmaking process and enables the more comprehensive and
efficient utilization of symbiotic ore resources. Commonly used: manganese
silicon, silicon calcium, silicon zirconium, silicon manganese aluminum,
silicon manganese calcium and rare earth ferrosilicon.
Ferroalloys Ferroalloys,Ferro Silicon,Ferro Tungsten,Different Shape Ferroalloys Hwa Seng Resources (Hong Kong) Co., Limited , http://www.hwaseng-resources.com
Bao Mingsheng pointed out that through the research of scientific research departments, for every 100kg of apples produced, 0.46kg of nitrogen, 0.26kg of phosphorus and 0.55kg of potassium are needed. According to the calculation of 5000kg apple orchard per mu, 23kg of nitrogen, 13kg of phosphorus and 27.5kg of potassium are required. At the same time, it is required to have rich soil organic matter and various medium and trace elements. According to the above requirements, if the apple orchard with a yield of 10,000 kg (5000 kg) per mu is fertilized and fermented, the fern and the sheep ring fertilizer (added soil and grass) can cost more than 6000 kg per mu per year. If fermented pure (wet) cow dung, sheep manure, and pig manure are fermented, it needs more than 3,000 kg per mu per year. If fermented pure (wet) manure and chicken manure are fertilized, it needs more than 2000kg per acre per year (the chicken manure in the chicken farm contains more salt, and the annual application is not good for fruit trees). If the bean cake and cottonseed cake are used, it needs 800-1000kg per mu per year. If you apply dandelion brand 12% bio-organic fertilizer, it needs more than 500kg per acre per year. If chemical fertilizer is applied, due to nitrogen fertilizer volatilization, leaching, phosphate fertilizer, potassium fertilizer fixation, etc., 120 kg of urea, 200 kg of diammonium phosphate and 110 kg of potassium sulfate should be applied per acre, and a small amount of medium and trace elements should be added.
Bao Mingsheng particularly emphasized that for orchards with weak soil or weak tree, organic and inorganic fertilizers should be combined. When applying high-quality high-quality organic fertilizer, 20kg of urea and 30kg of potassium sulfate should be added per acre.
Fruit trees should be fertilized in quantity
Fruit trees are high-yield and high-quality in successive years, and should be protected by sufficient fertilizer. If the fertilization is insufficient, the fruit will become smaller, the yield will decrease, the quality will deteriorate, and the fruit trees will be severe and small. So, how much fertilizer is suitable for fruit trees? Bao Mingsheng of Jinan Forestry Bureau believes that the amount of fertilizer applied to fruit trees should meet the demand for fruit yield.
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