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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Fluxing of South African chromite ore with colemanite
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Fluxing of South African chromite ore with colemanite

机译：南非铬铁矿矿石与科学土

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South African chromite ores are smelted using SiO_2- and CaO-containing fluxes, normally as quartz and limestone respectively. The purpose of SiO_2 is to lower the melting point of the ore, while CaO is added to ensure that the slag that forms on smelting is fluid enough to enable slag/alloy separation and tapping from the furnace. Colemanite is a borate mineral originating primarily from Turkey, and has the nominal, ideal composition CaB_3O_4(OH)_3.H_2O. B_2O_3 readily fluxes chromite, and low amounts of this compound can yield a lowering of the melting temperature similar to that obtained using SiO_2. In addition, colemanite already contains CaO, which aids in making the resulting slag more fluid. Laboratory-scale smelting tests were conducted at Mintek over the course of 18 months. The work included evaluation of a variety of boron-containing materials to replace conventional fluxes. The results of the tests and modelling work are presented in this paper.
机译：南非铬铁矿矿石使用SiO_2-和含CaO的助熔剂，通常分别为石英和石灰石。 SiO_2的目的是降低矿石的熔点，而CaO被添加以确保在冶炼上形成的炉渣是足够的流体，以使炉渣/合金分离和挖掘炉子。 CONEMANITE是一个主要来自土耳其的硼酸盐矿物，并具有标称，理想的构图CAB_3O_4（OH）_3.H_2O。 B_2O_3易于铬铁矿，并且低量的该化合物可以降低熔化温度与使用SiO_2获得的熔化温度降低。 此外，科学生已经含有CAO，有助于使所得的渣更流体。 在18个月的过程中，在Mintek进行了实验室规模的冶炼试验。 该工作包括评估各种含硼材料以取代常规助熔剂。 本文提出了测试和建模工作的结果。

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