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Device, method and system for supergravity separation of boron resource in boron slag

A high-gravity, boron slag technology, applied in the field of efficient separation and utilization of symbiotic resources, can solve the problems of increased cost, long carbonization time, and low utilization rate of carbon dioxide, so as to achieve comprehensive utilization and solve the effect of environmental load

Active Publication Date: 2014-03-19
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Carbon-alkali carbonization takes a long time. If sodium bicarbonate is used for carbonization, the cost of raw materials (NaHCO3) will increase, and the utilization rate of carbon dioxide will be low. The raw materials are required to have a relatively fine particle size, and the activity of boron-rich slag is required Strict, without slow cooling treatment, the carbonization rate is very low, only about 30%

Method used

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  • Device, method and system for supergravity separation of boron resource in boron slag
  • Device, method and system for supergravity separation of boron resource in boron slag
  • Device, method and system for supergravity separation of boron resource in boron slag

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Take 10kg of electric furnace boron-rich slag (Kuandian raw ore), and grind it to below 200 mesh. After testing, the MgO and (B 2 o 3 +SiO2 2 ) The mass ratio is 1.74, so add 0.6kgMgO to the slag to make MgO and (B 2 o 3 +SiO2 2 ) was adjusted to 2.0, fully mixed and then heated to 1450°C for 30 minutes to ensure that the ingredients were evenly mixed, then rapidly cooled to 1200°C, and then at a cooling rate of 0.5°C / min to promote boron slag in the temperature range of 1200-1100°C The boron element in Suianite is enriched towards the Suianite phase, and finally precipitates and grows in the form of Suianite crystals. After the heat treatment of the slag is completed, adjust the temperature of the slag to 1150°C and start the centrifuge immediately, adjust the speed of the centrifuge so that the gravity coefficient is 400g, and after centrifuging at a constant temperature for 20 minutes, turn off the centrifuge. Grind the sample at the solid outlet end of the slag...

Embodiment 2

[0044] Take 10kg of electric furnace boron-rich slag (Kuandian raw ore), and grind it to below 200 mesh. After testing, the MgO and (B 2 o 3 +SiO2 2 ) The mass ratio is 1.74, so add 0.6kgMgO to the slag to make MgO and (B 2 o 3 +SiO2 2 ) was adjusted to 2.0, fully mixed and then heated to 1450°C for 30 minutes to ensure that the ingredients were evenly mixed, then rapidly cooled to 1200°C, and then at a cooling rate of 0.5°C / min to promote boron slag in the temperature range of 1200-1100°C The boron element in Suianite is enriched towards the Suianite phase, and finally precipitates and grows in the form of Suianite crystals. After the heat treatment of the slag is completed, adjust the temperature of the slag to 1150°C and start the centrifuge immediately, adjust the speed of the centrifuge so that the gravity coefficient is 400g, control the cooling rate at about 1-5°C / min, and turn off the centrifuge after the temperature drops to 1050°C , natural cooling. The sample ...

Embodiment 3

[0046] Take 10kg of electric furnace boron-rich slag (Kuandian raw ore), and grind it to below 200 mesh. After testing, the MgO and (B 2 o 3 +SiO2 2 ) The mass ratio is 1.74, so add 0.6kgMgO to the slag to make MgO and (B 2 o 3 +SiO2 2 ) was adjusted to 2.0, fully mixed and then heated to 1450°C for 30 minutes to ensure that the ingredients were evenly mixed, then rapidly cooled to 1200°C, and then at a cooling rate of 0.5°C / min to promote boron slag in the temperature range of 1200-1100°C The boron element in Suianite is enriched towards the Suianite phase, and finally precipitates and grows in the form of Suianite crystals. After the slag heat treatment is completed, adjust the slag temperature to 1150°C and start the centrifuge immediately, adjust the speed of the centrifuge so that the gravity coefficient is 600g, and control the cooling rate in the centrifuge to 2.5°C / min, and turn off the centrifuge after the temperature drops to 1050°C , natural cooling. The sampl...

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Abstract

The invention provides a device, method and system for supergravity separation of a boron resource in boron slag. The method comprises a first step of cooling molten boron slag at a cooling speed of 2 DEG C / min within a temperature interval of 1300-1200 DEG C, and obtaining heat treatment boron slag; and a second step of performing centrifugal supergravity separation on the heat treatment boron slag. After the centrifugal supergravity separation, refined boron slag with the suanite grade at 70-80% can be obtained, and the recovery rate of boron in the boron slag can reach 80-90%. The device, method and system for supergravity separation of the boron resource in the boron slag have the advantages that oriented enrichment of fine and scattered boron-rich phases in the boron slag is achieved by utilizing supergravity, and yields and quality of product boronic acid and borax are improved. The refined boron slag separated by the supergravity can be used for manufacturing the boronic acid in an acid hydrolysis mode, or the borax is manufactured in a carbon alkali method. A main phase in tailings is forsterite, magnesium sulfate monohydrate can be obtained in a sulfuric acid method, the problem of an environmental load of the boron slag is solved, and comprehensive utilization of the boron slag resource is also achieved.

Description

Technical field [0001] The present invention involves the efficient separation of student resources in the field of metallurgy, and specially involves a device, method and system that is separated from boron resources in boron residues under the condition of super gravity. Background technique [0002] There are rich boron -magnesium iron ore resources in Dandong, Liaoning in my country, accounting for about 58%of my country's boron resources.After the boron-magnesium iron concentrate was smelted through the blast furnace, 85%-90%of the boron rich in raw ore settled in the residue to form B 2 O 3 The quality score of more than 12%is rich in boron residue and boron -containing iron.With the mining of boron -magnesium resources in my country, there are fewer and fewer boron -magnesium ores in high -grade. Low -grade boron -magnesium ore contains low boron and high magnesium, which is not conducive to processing.In order to expand the boron resources and develop my country's boron i...

Claims

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Application Information

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IPC IPC(8): B04B3/00
Inventor 郭占成李军成高金涛
Owner UNIV OF SCI & TECH BEIJING
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