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攀钢含钛高炉渣高温下经碳还原后得到有价组元碳化钛,碳化钛晶粒细小且均匀分布在碳化渣中,利用常规的选矿方法很难将其富集来提高品味。本文将超重力技术引入到攀钢含钛高炉碳化渣中,探讨碳化钛在超重力场下的富集与分离规律。研究结果表明:经过超重力富集后试样出现了明显的分层,碳化钛全部富集在试样的下部,而在试样的上部几乎找不到碳化钛相,并且在富集的试样中碳化钛的面积分数沿着超重力方向逐渐增加。重力系数越大,富集时间越长,碳化钛的富集效果越好。预处理渣在重力系数G=300于1320°C等温富集20 min后,下部富集渣中碳化钛的含量由常重力下的11.6%提高到了18.8%。另外,经超重力场过滤分离后,碳化钛全部被截留在碳毡上部的精矿中,脉石相则被分离到下部坩埚中。预处理渣在重力系数G=300于1320°C等温分离20 min后,上部精矿中碳化钛的含量提高到了23.8%,而脉石中则找不到任何碳化钛。
The titanium-containing titanium slag of Panzhihua Iron and Steel (Group) Co., Ltd. obtained the titanium carbide of the value-added component after carbon reduction under high temperature. The crystal grains of the titanium carbide are small and evenly distributed in the carbonized slag, which is difficult to be enriched by the conventional dressing method to improve the taste. In this paper, the technology of super gravity was introduced into the carbonized slag of titanium-containing blast furnace in Panzhihua Iron and Steel (Group) Co., Ltd. to investigate the enrichment and separation rules of titanium carbide under super-gravity field. The results show that there is a clear delamination of the sample after super-gravity enrichment, the titanium carbide is all enriched in the lower part of the sample, while almost no titanium carbide phase can be found in the upper part of the sample, In the sample, the area fraction of titanium carbide gradually increases along the direction of supergravity. The larger the gravitational coefficient, the longer the enrichment time, the better the enrichment effect of titanium carbide. After the pretreatment slag was isothermally enriched at G = 300 at 1320 ° C for 20 min, the content of titanium carbide in the lower enriched slag increased from 11.6% under normal gravity to 18.8%. In addition, after filtration and separation by super gravity field, titanium carbide is all retained in the concentrate above the carbon felt, and the gangue phase is separated into the lower crucible. Pretreatment slag After the G = 300 isothermal separation at 1320 ° C for 20 min, the content of titanium carbide in the upper concentrate increased to 23.8%, while no titanium carbide could be found in the gangue.