[天元]批发0-1 1-3mm段号海绵铁滤料 海绵铁各种含量 样品免费

海绵铁简介：

海绵铁采用优质矿石，利用氧化还原反应原理，通过滤式除淀方式进行排除，对管道、锅炉和循环水溶解氧腐蚀经水处理后水溶解氧含量可将到0.05mg/L以下。在回转窑、竖炉或其他反应器内，用煤、焦炭，天然气或氢气，使铁矿石或铁精矿球团在低于物料熔化温度的条件下进行低温还原，变成多孔状的产物。其中被还原出来的铁呈细小铁核，形如海锦，故称。海绵铁经冷却、破碎、磁选，可除去脉石或其他杂质(金属铁占全铁90％以上者，可直接用于炼钢；90％以下的，用于高炉或电炉炼铁)。

在低于熔化温度之下将铁矿石还原成海绵铁的炼铁生产过程，其产品为直接还原铁（即DRI），也称海绵铁。该产品未经熔化，仍保持矿石外形，由于还原失氧形成大量气孔，在显微镜下观察团形似海绵而得名。海绵铁的特点是含碳低（＜1％），并保存了矿石中的脉石。这些特性使其不宜大规模用于转炉炼钢，只适于代替废钢作为电炉炼钢的原料。海绵铁中硫、磷等有害杂质与有色金属含量低，有利于电炉冶炼优质钢种。含铁量超过97％以上也属于海绵铁，但应用于粉末冶金领域，其形状分块状和粉状（一次还原铁粉），如深加工还可做二次还原铁粉，其含铁量将达到99％以上。

海绵铁滤料适用范围：

1、适用于热水锅炉的补水;

2、适用于低压蒸汽锅炉的给水;

3、适用于工业循环冷却水补水;

4、适用于油田注水

海绵铁理化指标：

名称 指标 名称 指标

活性铁 ≥98％ 容重 2.2g/cm3

抗压强度 1500N／T 比表面积 85g／cm3

抗腐指数 ≤3.4 SiO2＋AL2O3 ≤5.5

S ≤0.03％ Cu ≤0.002％

Sn ≤0.002％ Bi ≤0.002％

海绵铁除氧原理：

海绵铁滤料，常温过滤式除氧化学除氧，采用优质矿粉(活性海绵铁)，海绵铁主要成分是铁，其疏松多孔的内部结构，提供的比表面积是普通铁屑的5-10倍，可使水中的氧与铁发生迅速的氧化反应，通过滤式除淀方式进行排除，对管道、锅炉很循环水溶解氧腐蚀经处理后水溶解氧含量可达到0.05 mg/L以下。

Sponge iron profile:

Using quality sponge iron ore, using the REDOX reaction principle, through a filter in addition to the lake way out, pipe, boiler and circulating water dissolved oxygen corrosion after water treatment water dissolved oxygen content can be below 0.05 mg/L. In rotary kiln, shaft furnace or other reactor, coal, coke, gas or hydrogen gas, iron ore and pellets of iron concentrate in below material melt temperature under the condition of low temperature reduction, become the product of cellular. The reduction of iron in small iron core, such as sea jin, therefore calls. Sponge iron after cooling, crushing, magnetic separation, can eliminate gangue or other impurities (metallic iron more than 90% of total iron, can be directly used in steelmaking; below 90%, used in the blast furnace or electric furnace ironmaking).

Under below the melting temperature to iron ore reduction ChengHaiMian ironmaking production process and its products for direct reduced iron (DRI), also known as sponge iron. This product without melting, the remained ore appearance, due to the reduction of oxygen to form a large number of pores, under the microscope observer mission is shaped like a sponge. Sponge iron is the feature of low carbon (< 1%), and save the gangue in the ore. These features make it should not be large-scale used in converter steelmaking, only suitable for instead of the scrap steel as electric furnace steelmaking raw materials. Harmful impurities such as sulfur and phosphorus in sponge iron with low content of non-ferrous metal, is advantageous to the electric furnace smelting high quality steel. Iron content more than 97% also belong to the sponge iron, but used in powder metallurgy field, its shape block and powder (a reduced iron powder), such as processing can also do the second reduced iron powder, its iron content will reach more than 99%.

Sponge iron filter, scope of application:

1, suitable for hot water boiler of filling water;

2, suitable for low pressure steam boiler feed water;

3, suitable for industrial circulating cooling water filling water;

4, suitable for oilfield water injection

Sponge iron physical and chemical indicators:

The name of the index name index

Activity of 98% or greater density of 2.2 g/cm3

Compressive strength of 1500 n/T specific surface area of 85 g/cm3

Corrosion resistance index of 3.4 or less SiO2 + AL2O3 5.5 or less

S 0.03% or less Cu 0.002% or less

Sn Bi acuities were 0.002% and 0.002% or less

Sponge iron oxygen principle:

Sponge iron filter material, normal temperature oxygen oxygen removal filter type, USES the high quality mineral powder sponge iron (activity), sponge iron main component is iron, the internal structure of the porous, provides the specific surface area of 5 to 10 times that of ordinary iron filings, can make the oxygen in the water and radical oxidation reaction, iron, occur through out in the form of a filter in addition to the lake of pipelines, boiler is circulating water dissolved oxygen corrosion after dealing with the water below the dissolved oxygen content can be up to 0.05 mg/L.

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巩义市天元刚玉磨料有限公司

：杨翠

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