铁合金精炼炉、矿热炉用捣打料The Ramming Mass for Ferro-Alloy Refining and Mineral Heating Furnaces

该系列产品以高铁高钙镁砂为主要原料，引入超微粉促烧剂和抗渣侵蚀增强剂制备而成。其工作原理为：高铁高钙镁砂的主晶相为方镁石(MgO)，其胶结相2CaO·Fe2O3(C2F，Tm=1425℃)为过渡型低熔相。与铁液接触的捣打料工作层，在温度较低时，捣打料中的C2F能起到促烧的功能；当工作面形成稳定的烧结层，在使用温度下(T>1425℃)，C2F分解生成FeO与fCaO，FeO固溶到MgO生成(Mg,Fe)O高熔点相，fCaO与渣中的SiO2生成2CaO·SiO2高熔点相，提高了抗渣侵蚀和抗渣渗透性能。与铁液相距较远的捣打料由于温度低，扔保持原来的松散结构，能有效地缓冲烧结层的热应力并防止漏铁水。

This series of products are mainly made of high calcium & iron magnesium sand, and introducing ultrafine powder agent and anti-slag erosion reinforcing agent. Its working principle is: the principal crystal phase of the high calcium & iron magnesium sand is periclase (MgO), the consolidation phase 2CaO. Fe2O3 (C2F, Tm = 1425 ℃) is a transitional low eutectic phase. When the temperature is low ,the working layer of the ramming material in contact with the iron liquid can play the function of promoting combustion.When the face form stable sintering layer, in the using temperature (T > 1425 ℃), decompose to FeO and fCaO ,FeO solid solution into MgO generated (Mg, Fe) O high melting point phase, fCaO and SiO2 in the slag generate 2Cao. SiO2 high melting point phase,it improves the performance of slag erosion resistance and anti-slag penetration.The ramming material which is far away from the liquid iron keeps the original loose structure due to the low temperature, which can effectively buffer the thermal stress of the sintered layer and prevent the leakage of molten iron.

 

产品牌号 Brand	化学含量(w%)				粒度/mm
	MgO	SiO2	CaO	Fe2O3
CX-TD-1	>   84	< 1.2	6-10	4-6	0-6
CX-TD-2	> 83	<   1.5	6-12	3.5-5
CX-TD-3	>   85	<   3	<   8	<   4
CX-TD-4	> 83	<   3.5	<   6	<   3