Yingkou Hexiang Refractories Co., Ltd.
Address: Gaozhuang Village, Nanlou Development Zone, Dashiqiao City
Gneral Manager: Zou Xiang
Mobile phone: 18041718881
Mobile phone: 15141715888
Mobile phone: 18641774666
Hexiang refractory professional magnesia manufacturer, refractory raw materials have a high purity
Refractory materials have high purity:
(1) The composition of hot metal has a significant effect on the life of refractories, especially the content of silicon, phosphorus and sulfur.
(2) The high end temperature of converter will lead to the decrease of lining life, especially when the end temperature is above 1700C, the corrosion rate of refractories will increase significantly with the increase of 10 C.
(3) Increasing slag basicity is beneficial to reducing slag corrosion to alkaline refractories.
(4) Increasing MgO content in slag can reduce slag corrosion to refractory lining.
(5) Increasing the content of FeO in slag will lead to worsening corrosion of refractory lining.
(6) In the initial stage of converter blowing, slag basicity is relatively low and lining erosion is serious. Dolomite slagging should be adopted to make MgO content in slag close to saturation.
(7) Fluorite also corrodes the lining, so the amount of fluorite should be reduced as much as possible.
(8) Among dolomite and magnesia dolomite refractories, the slag erosion resistance of MgO is better than that of CaO, but the presence of CaO can improve the high temperature thermoplasticity and slag permeability of refractories.
(9) High purity of lining refractories is required, such as magnesia dolomite sand, which requires less than 3% of total impurities SiO 2+A12O3+FeO, and other refractories such as fused magnesia and graphite.