國內廠家直銷一次還原鐵粉和二次還原鐵粉吳總為你講述之間的區別

 一次：直接還原法生產生鐵 二次：熔融還原法生產生鐵 （一）直接還原法生產生鐵 直接還原法是指在低于熔化溫度之下將鐵礦石還原成海綿鐵的煉鐵生產過程，其產品為直接還原鐵（即DRI），也稱海綿鐵。

A: direct reduction method of the production of pig iron second: smelting reduction method of the production of pig iron (a) direct reduction process to produce pig iron direct reduction method is in below their melting temperature will iron ore reduced to sponge iron in iron making process and its products for direct reduced iron (DRI), also known as sponge iron.

 還原性鐵粉通俗的講就是用還原方法制取的鐵粉.又叫還原鐵粉一種活性很強的鐵粉，因為具有較強的還原性，很容易發生氧化反應，甚至在空氣中稍稍加熱就會燃燒，因為它的這種特性，經常用于焊接鐵軌、化工還原、防止氧化變質等。制取的化學方程式是Fe3O4+4H2=3Fe+4H2O ，也就是磁鐵礦與氫氣發生氧化還原反應，生成水和還原性鐵粉。還原法就是利用固體或氣體還原劑（焦炭、木炭、無煙煤、水煤氣、轉化天然氣、分解氨、氫等）還原鐵的氧化物(鐵精礦、軋鋼鐵鱗等)來制取海綿狀的鐵。還原過程中分為（固體碳還原）一次還原和二次還原一次還原就是固體碳還原制取海綿鐵，一次還原主要流程是：(鐵精礦、軋鋼鐵鱗等)→烘干→磁選→粉碎→篩分→裝罐→進入一次還原爐→海綿鐵二次精還原流程:海綿鐵→清刷→破碎→磁選→二次還原爐→粉塊→解碎→磁選→篩分→分級→混料→包裝→成品用還原發所生產的優質鐵粉，各項參數達標，Fe≥98%，碳≤0.01％，磷和硫都小于0.03％，氫損為0.1～0.2％。還原鐵粉的主要用途有 ：粉末冶金制品還原鐵粉，此行業耗用還原鐵粉總量的60%~80% 電焊條用還原鐵粉，在藥皮中加入10～70％鐵粉可改進焊條的焊接工藝并顯著提高熔敷效率化工用還原鐵粉，主要用于化工催化劑，貴金屬還原，合金添加，銅置換等切割不銹鋼鐵粉，在切割鋼制品時，向氧-乙炔焰中噴射鐵粉,可改善切割性能，擴大切割鋼種的范圍，提高可切割厚度我國粉末冶金行業技術的不斷提高，目前粉末冶金零件廣泛應用與飛機，槍械，摩托車，家庭轎車，汽車，農機，礦山，電動工具，機床，運輸等各種機械行業，隨著我國經濟的飛速發展，還原鐵粉用量在逐年上漲。

Reduced iron powder popular speak is to use method for preparing iron powder reduction. Also called reduced iron powder a very strong activity of iron, because with a strong reduction, is prone to oxidation reaction, even in the air a little heat will burn. Because of it, is often used in rail welding, chemical reduction, prevent oxidation and deterioration. The chemical formula is Fe3O4+4H2=3Fe+4H2O, that is, magnetite and hydrogen oxidation reduction reaction, the formation of water and reduction of iron powder. Reduction method is the use of solid or gaseous reducing agent (coke, charcoal, anthracite, water gas, transformation of natural gas, decomposition of ammonia, hydrogen) reduction of iron oxide (iron concentrate, rolling iron scale, etc.) to produce sponge iron. The mixture solution of fine secondary reduction process (solid carbon reduction) a reduction and secondary reduction time reduction is solid carbon reduction to produce sponge iron, a reduction of the main process is: (iron concentrate, rolling iron scale), drying, magnetic separation, crushing, screening, canning, into a reduction furnace, sponge iron reduction process: sponge iron, cleaning, crushing, magnetic separation, secondary reduction furnace, powder block, fragmentation, separation, screening, classification, and packaging to obtain the finished product by reducing the production of high-quality iron, the parameters were met, Fe is equal to or more than 98%, the carbon is less than or equal to 0.01%, phosphorus and sulfur is less than 0.03%, the hydrogen loss of 0.1 ~ 0.2%. The main purposes are: reduction of iron powder reduced iron powder metallurgy products, the industry consumption reduction of iron total 60%~80% welding wire with reduced iron powder, adding 10 ~ 70% iron welding process can improve the electrode and improve the deposition efficiency of chemical reduction of iron in medicine in the skin, is mainly used for chemical catalysts, noble metal reduction, alloy add copper replacement cutting stainless steel iron, in cutting steel products, iron powder injection to the oxygen acetylene flame, can improve the cutting performance, expand the scope of cutting steel, improve the cutting thickness of powder metallurgy technology in China continues to improve, and the current aircraft, powder metallurgy parts widely used firearms, motorcycle, household car, automobile, agricultural machinery, mining, electric tools, machine tools, transportation and other machinery industry, with the rapid development of China's economy, reduction of iron powder Quantity increases year by year.