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Process for producing gravel or sand for construction from high titania bearing blast furnace slag

A blast furnace slag, high titanium technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., to achieve the effect of simple process, broad market, and beneficial to sustainable development

Active Publication Date: 2014-02-26
攀枝花环业冶金渣开发有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0047] 1.3 Hazardous substances

Method used

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  • Process for producing gravel or sand for construction from high titania bearing blast furnace slag
  • Process for producing gravel or sand for construction from high titania bearing blast furnace slag
  • Process for producing gravel or sand for construction from high titania bearing blast furnace slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Cooling of liquid high-titanium blast furnace slag: for the first cooling, the high-temperature molten liquid high-titanium type blast furnace slag is about 350 tons per 15 slag pots to be compiled into one trip slag, and then dumped into a 120m long and 10m wide slag field by train. On the slag receiving platform, after 40 minutes of natural cooling, use about 45 tons of water to cool for about 8 minutes; stop for 20 minutes for the second cooling, and then use about 90 tons of water to cool for 15 minutes to complete one treatment. At this time, the slag is large. Partially solidified. In the second trip, about 350 tons of slag was transported to the slag yard again, and the last cooling process was repeated. After overlapping six times, it will no longer be dumped when it reaches a thickness of about 1.2m, and the above process is repeated for another slag receiving platform. The slag strength - crush value index for this method is 17%.

[0097] There are 7 slag re...

Embodiment 2

[0101] For the first cooling, about 350 tons of high-temperature molten liquid high-titanium blast furnace slag is compiled into a trip of slag every 15 slag tanks. After arriving at the slag yard by train, it is dumped on a slag receiving platform with a length of 120m and a width of 10m, and it is cooled naturally. After 60 minutes, use about 45 tons of water to cool for about 8 minutes; stop for 25 minutes and then conduct a second cooling, and then use about 90 tons of water to cool for 15 minutes to complete one treatment. At this time, most of the slag solidifies, and the strength of the slag is Formed, about 350 tons of slag was transported to the slag yard in the second trip, and the last cooling process was repeated. After overlapping six times, it will no longer be dumped when it reaches a thickness of about 1.2m, and the above process is repeated for another slag receiving platform. The slag strength-crushing value index formed by this method was 16.4%.

[0102] Su...

Embodiment 3

[0104] For the first cooling, about 350 tons of liquid high-titanium blast furnace slag molten at high temperature is compiled into one trip of slag every 15 slag tanks. After cooling for 120 minutes, use about 45 tons of water to cool for about 8 minutes; after stopping for 30 minutes, perform a second cooling, and then use about 90 tons of water to cool for 15 minutes to complete one treatment. At this time, most of the slag solidifies, and the slag is The strength is formed, and about 350 tons of slag is transported to the slag yard in the second trip, and the last cooling process is repeated. After overlapping six times, it will no longer be dumped when it reaches a thickness of about 1.2m, and the above process is repeated for another slag receiving platform. The slag strength-crushing value index formed by this method is 15.2%.

[0105] Subsequent mining and crushing methods are the same as in Example 1.

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Abstract

The invention belongs to the field of recovering and utilizing high titania bearing blast furnace slag, and specifically relates to a process for producing gravel or sand for construction from high titania bearing blast furnace slag. The technical problem to be solved by the invention is high treatment and utilization difficulty of the high titania bearing blast furnace slag. A scheme to solve the technical problem is to provide a process for producing construction materials from the high titania bearing blast furnace slag; the process comprises the following steps: a, cooling the liquid high titania bearing blast furnace slag melted at a high temperature; b, crushing, sieving and deironing the cooled high titania bearing blast furnace slag to obtain gravel; or c, crushing, sieving and deironing the gravel to obtain sand. The process provided by the invention provides a new way for large scale innocent treatment of the high titania bearing blast furnace slag.

Description

technical field [0001] The invention belongs to the field of recycling and utilization of high titanium blast furnace slag, and in particular relates to a process for producing high titanium blast furnace slag to crush stone or sand for construction. technical background [0002] The blast furnace slag produced after vanadium-titanium-magnetite ironmaking contains 18-26% TiO 2 , so it is called high-titanium blast furnace slag. Compared with ordinary blast furnace slag, high-titanium blast furnace slag has become inert slag because of its high titanium content, and it is difficult to be used in cement production on a large scale like ordinary slag. If you want to separate titanium, because the titanium in it is dispersed in various minerals such as titanite, perovskite, titanium-rich diopside, magnesium-aluminum spinel, TiC, TiN and their solid solutions, and the mineral particles are fine, The relationship between interphase is complicated, and the dissociation of monomer...

Claims

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Application Information

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IPC IPC(8): C04B18/14
CPCY02W30/91
Inventor 杨志远杨胜利吴向前
Owner 攀枝花环业冶金渣开发有限责任公司