Method for preparing sintered brick from laterite-nickel ore high-pressure acid leaching smelting tailings and sintered brick: Fid-Bau Portal

Method for preparing sintered brick from laterite-nickel ore high-pressure acid leaching smelting tailings and sintered brick

REN JIALIN / XIE CAI / ZHAO YIXUAN / CHEN YONGJIAN

Abstract

The invention provides a method for preparing a sintered brick by using laterite-nickel ore high-pressure acid leaching smelting tailings and the sintered brick, and the method comprises the following steps: S10, mixing the laterite-nickel ore high-pressure acid leaching smelting tailings subjected to filter pressing with an additive to obtain a mixture, adding a certain amount of water into the mixture, uniformly stirring to obtain mixed slurry, and sintering the mixed slurry in a sintering furnace to obtain the sintered brick; then pressing the mixed slurry into a green brick; s20, aging the green brick subjected to compression molding for a period of time; s30, the aged green bricks are dried; and S40, firing the dried green brick into a sintered brick. According to the method, the laterite-nickel ore high-pressure acid leaching smelting tailings and additives are prepared according to a certain proportion and then sintered into bricks, and resource utilization of the laterite-nickel ore high-pressure acid leaching smelting tailings can be achieved.

本发明提供一种利用红土镍矿高压酸浸冶炼尾渣制烧结砖的方法及烧结砖，该方法包括以下步骤：S10：将压滤后的红土镍矿高压酸浸冶炼尾渣与添加剂混合后得到混合料，向所述混合料中加入一定量的水，搅拌均匀后得到混合浆料，然后将所述混合浆料压制成砖坯；S20：将压制成型的所述砖坯陈化一段时间；S30：将陈化后的所述砖坯烘干；S40：将烘干后的所述砖坯烧制成烧结砖。该方法通过将红土镍矿高压酸浸冶炼尾渣与添加剂按一定比例配制后烧结成砖，可实现红土镍矿高压酸浸冶炼尾渣的资源化利用。

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