Method for preparing red mud reduced slag hollow glass beads and iron reduction furnace

Method for preparing red mud reduced slag hollow glass beads and iron reduction furnace

  • CN 102,503,131 B
  • Filed: 11/02/2011
  • Issued: 02/11/2015
  • Est. Priority Date: 11/02/2011
  • Status: Active Grant
First Claim
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1. the preparation method of a red mud iron reduction furnace slag hollow glass micropearl, it is characterized in that, the structure of iron reduction furnace comprises:

  • reduction furnace (1), molten bath (2), slag molten bath (3), iron bath (4), pan feeding machine (5), molten iron passage (6), molten iron entrance (7), slag melt outlet (8), slag melt passage (9), slag melt feeding port (10), compressed air outlet (11), be that major ingredient adds green coke jewel with red mud, waste glass powder, quartz sand, coal gangue, titanium dioxide, each component accounts for;

    red mud 35 ~ 82.5%, green coke jewel 3 ~ 15%, waste glass powder 3 ~ 10%, quartz sand 1 ~ 15%, coal gangue 10 ~ 20%, titanium dioxide 0.5 ~ 5%, wherein, the iron oxide content of red mud is 8 ~ 40%, specifically comprise the following steps;

    (1) prepare burden;

    red mud 35 ~ 82.5%, green coke jewel 3 ~ 15%, waste glass powder 3 ~ 10%, quartz sand 1 ~ 15%, coal gangue 10 ~ 20%, titanium dioxide 0.5 ~ 5%, and mix obtained compound;

    (2) melting and reducing;

    by the coal dust of additional for above-mentioned compound 1 ~ 5%, after fully reducing under 1000 ~ 1200 DEG C of reducing atmospheres, put in the molten bath (2) in iron reduction furnace (1) by pan feeding machine (5) briquetting, temperature is 1550 ~ 1650 DEG C, atmosphere is oxidizing atmosphere, briquetting sinks to below slag melt liquid level and melting, the height H of molten bath (2) slag melt upper surface and molten bath (2) bottom and the height h2 of molten iron level and molten bath (2) bottom is controlled by the feed rate controlling pan feeding machine (5), molten iron sinks to the bottom of molten bath (2), and slag melt floats to the top of molten bath (2), molten iron is separated automatically with slag melt,(3) hollow glass micropearl blowing;

    slag melt enter slag melt feeding port (10) deliver to compressed air outlet (11) be blow molded into size not wait hollow glass micropearl.

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