Abstract

Based on the data analysis on beneficial use of red mud and oily rolling-mill scale, a novel direction of utilization has been formulated consisting in the joint processing of these wastes with liquid products. The technological simulation covering the joint water treatment stage of a red mud and oily rolling scale mixture has been performed using an enlarged setup. The yields and compositions of the products have been determined. A batch of washed precipitate has been sent for the studies on obtaining iron-containing raw materials for the subsequent pyrometallurgical processing. At a ratio between the component amounting to 1 : 1, at a solid-to-liquid ratio of 4, and at a temperature of 95°C and duration amounting to 2 h, 6.3 kg of the mixture have been processed. Resulting from this procedure, 6.58 kg of washed precipitate with a moisture content of 21.3% and 12.6 dm³ in volume of the final solution have been obtained. The specific volume rate of water evaporation has been determined to amount to 31.3 dm³ /h per 1 m² of pulp surface. Based on the iron concentration in the precipitate (54.4%) and in the final solution (1.1–1.3 mg/dm³), it is shown that iron is almost completely accumulated in the precipitate. Silicon, aluminum, phosphorus, sulfur, sodium oxide and organic matter impurity concentration in the processing products have been determined. According to the results, the joint processing flowsheet of red mud and oily rolling-mill scale has been developed and the ways for using the processing products have been outlined: supplying the precipitate for obtaining iron, supplying the filtrate to industrial purification, as well as supplying evaporated and flushing water to leaching. Using the cooperation between enterprises of the Kamensk-Uralskii Industrial Complex as an example, a schematic diagram of equipment intended for processing is considered. It is worthwhile to use the obtained data in order to implement the technology, in particular, for the development of technological regulations for the design of a pilot plant.

中文翻译：

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油性污垢与赤泥联合浸出的工艺模拟

摘要

在对赤泥和油性轧机氧化皮的有益利用的数据分析的基础上，制定了一种新的利用方向，包括将这些废物与液体产品联合处理。已经使用扩大的设置进行了涵盖赤泥和油性轧制水垢混合物的联合水处理阶段的技术模拟。已经确定了产物的产率和组成。已将一批洗涤后的沉淀物送去研究，以获取用于后续火法冶金加工的含铁原料。在组分的比例为1：1，固液比为4，温度为95°C且持续时间为2h的条件下，已处理了6.3 kg的混合物。此过程的结果，6。最终溶液的体积为³。已确定每1m ²的纸浆表面水蒸发的比体积率为31.3dm ³ / h 。基于沉淀物中铁的浓度（54.4％）和最终溶液中的铁浓度（1.1–1.3 mg / dm ^3）），表明铁几乎完全聚集在沉淀物中。确定了加工产品中的硅，铝，磷，硫，氧化钠和有机物杂质浓度。根据结果​​，开发了赤泥和油性轧机氧化皮的联合处理流程图，并概述了使用这些处理产品的方法：提供沉淀物以获得铁，将滤液提供给工业纯化以及供应蒸发的和冲洗的水以进行淋滤。以Kamensk-Uralskii工业园区的企业之间的合作为例，考虑了用于加工的设备的示意图。值得使用获得的数据来实施该技术，特别是，