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Production method of expanded slag ceramsite

A production method and ceramsite technology are applied in the field of iron and steel smelting waste utilization, which can solve the problems of economic loss, slag accumulation, and large land occupation in the slag yard, and achieve the effects of thermal insulation physical and thermodynamic properties and high strength.

Inactive Publication Date: 2017-07-28
四川省劲腾环保建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Regardless of Chuanwei Group, Panzhihua Iron and Steel Group or Hebei Iron and Steel Group, high-titanium blast furnace slag has not been utilized on a large scale, resulting in a large amount of slag accumulation, and the slag yard occupies a large amount of land, which not only pollutes the environment but also causes huge economic losses.

Method used

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  • Production method of expanded slag ceramsite
  • Production method of expanded slag ceramsite
  • Production method of expanded slag ceramsite

Examples

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Effect test

Embodiment 1

[0069] The method for producing expanded slag ceramsite by utilizing high-titanium type blast furnace slag provided in this embodiment comprises the following steps:

[0070] 1. The 1485°C molten iron from the blast furnace taphole flows into the molten iron tank through the iron ditch 1-1, and is sent to the vanadium extraction and steelmaking process. Iron slag floating on the molten iron is separated.

[0071] 2. Iron slag at 1453°C is treated with iron removal. Iron slag with high iron content is extracted as water flushing slag and used as cement admixture.

[0072] 3. Start the tundish driving device 2-5, send the tundish 2-4 to the bottom of the slag nozzle of the slag ditch 1-6, and then start the slag discharging operation. High-titanium blast furnace slag with low iron content and 1388°C comes from slag ditch 1-6, flows through tundish 2-4, and is strongly impacted and quenched by 8°C high-pressure cooling water sprayed out by two rows of nozzles 2-2 in turn . Befo...

Embodiment 2

[0091] The method for producing expanded slag ceramsite by utilizing high-titanium type blast furnace slag provided in this embodiment comprises the following steps:

[0092] 1. The molten iron at 1521°C from the blast furnace taphole flows into the molten iron tank through the iron ditch 1-1, and is sent to the vanadium extraction and steelmaking process. Iron slag floating on the molten iron is separated.

[0093] 2. Iron slag at 1496°C is treated with iron removal. Iron slag with high iron content is extracted as water flushing slag and used as cement admixture.

[0094] 3. Start the tundish driving device 2-5, send the tundish 2-4 to the bottom of the slag nozzle of the slag ditch 1-6, and then start the slag discharging operation. High-titanium blast furnace slag with little iron content and 1412°C comes from slag ditch 1-6, flows through tundish 2-4, and is strongly impacted and quenched by 10°C high-pressure cooling water sprayed out by two rows of nozzles 2-2 in turn...

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Abstract

The invention discloses a production method of expanded slag ceramsite, and provides a production method, in the technical field of utilization of iron and steel making slag, capable of isolating high-titanium blast furnace slag and producing expanded slag ceramsite with high-titanium blast furnace slag. The production method comprises the steps of A, charging slag-bearing molten iron into a separator after vanadium titano-magnetite that is smelted so as to separate high-titanium blast furnace slag; B; charging the high-titanium blast furnace slag into a cooling device, and using the cooling device to quickly quench the high-titanium blast furnace slag by spraying water; C, charging the high-titanium blast furnace slag into a casting device which breaks the high-titanium blast furnace slag that is still under quenching process, and casting out along different parabolas; D, charging the high-titanium slag into a slag collection tank having cooling water, and mixing the high-titanium blast furnace slag and cooling water to produce aqueous expanded slag; E, charging the aqueous expanded slag into a dry slag pit, and removing water to obtain expanded slag; F, charging the expanded slag into a breaking screening device so that the expanded slag are acquired so as to obtain expanded slag ceramsite.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting waste utilization, in particular to a production method for separating high-titanium blast furnace slag and producing expanded slag ceramsite. Background technique [0002] Common blast furnace slag treatment processes include rapid cooling process, slow cooling process and semi-quick cooling process. The quenching process adopts the water quenching method, including the water flushing slag method in front of the furnace, the pool method, and the large sedimentation tank method. , directly scattered in the slag ditch, and then flow into the pool is the most commonly used method at present, with less investment and low cost. During the quenching process, most of the substances in the molten blast furnace slag have no time to form stable compound crystals, and the thermal energy that cannot be released in time is converted into chemical energy in the form of glass and stored, so it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B5/00
Inventor 蔡建利王杜槟汤春林林永刚王亮曹立荣李传宋进
Owner 四川省劲腾环保建材有限公司