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Method for extracting carbon from gasified slag through wet method and recovering glass beads through dry method

A technology of glass microspheres and dry recovery, which is applied in chemical instruments and methods, wet separation, glass recovery, etc., can solve the problems of glass microspheres that are difficult to recycle, cannot be comprehensively utilized, gasification of fine slag and residual carbon, etc., and achieve Low cost, easy operation, high ignition loss effect

Active Publication Date: 2021-12-07
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The present invention proposes a method for recovering glass microspheres by wet carbon extraction from gasification slag and dry method to solve the problem that gasification fine slag residual carbon and glass microspheres are difficult to recycle and cannot be comprehensively utilized. Solve the use of glass microspheres for rubber and plastic fillers to enhance inorganic compatibility

Method used

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  • Method for extracting carbon from gasified slag through wet method and recovering glass beads through dry method

Examples

Experimental program
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Effect test

Embodiment 1

[0044] The aperture of 1# screening is 0.074mm, the aperture of 2# screening is 0.5mm, and the aperture of 3# screening is 0.031mm. Two-stage magnetic separation, the first-stage magnetic separation is a belt permanent magnet magnetic separator with a magnetic field strength of 10000Gs, and the second-stage magnetic separation is a dry electromagnetic magnetic separator with a magnetic field strength of 12000Gs. use figure 1 As shown in the process flow, the loss on ignition of the gasification black water fine slag raw ore of a chemical company in Inner Mongolia is 35.94%, Fe 2 o 3 The content is 9.39%, and other chemical components are mainly silicon dioxide, aluminum oxide, and iron oxide. The following products were obtained:

[0045] Product 1 enriched carbon powder: the yield is 32.78%, the loss on ignition is 82.45%, Fe 2 o 3 The content is 1.72%, and the carbon recovery rate is 75.19% of high-quality carbon powder. After dehydration and drying, this product can re...

Embodiment 2

[0049] This embodiment is basically the same as Embodiment 1, the difference is that the dry magnetic separation is divided into two stages of magnetic separation, the non-magnetic objects of one stage of magnetic separation enter into the second stage of magnetic separation, and the one stage of magnetic separation is belt type permanent magnetic separation machine, the magnetic field strength is 5000Gs, and the second-stage magnetic separation is a dry electromagnetic magnetic separator with a magnetic field strength of 15000Gs.

Embodiment 3

[0051] This embodiment is basically the same as Embodiment 1, the difference is that the dry magnetic separation is divided into two stages of magnetic separation, the non-magnetic objects of one stage of magnetic separation enter into the second stage of magnetic separation, and the one stage of magnetic separation is belt type permanent magnetic separation machine with a magnetic field strength of 8000Gs, and the second-stage magnetic separation is a dry electromagnetic magnetic separator with a magnetic field strength of 10000Gs.

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Abstract

The invention provides a method for extracting carbon from gasified slag through a wet method and recovering glass beads through a dry method. The method comprises the following steps that gasified slag is concentrated to obtain concentrated slag slurry, after 1 # screening, undersize products are concentrated and dehydrated to obtain high-ash fine slag, oversize products are subjected to carbon powder reselection operation, and reselected light minerals are concentrated and dehydrated to obtain enriched carbon fine components; reselected heavy minerals are concentrated and then reshaped for 2 # screening, undersize products are screened classified through 3 # screening, and fine-fraction minerals and coarse-fraction minerals are obtained; and dehydration, drying, surface modification and dry magnetic separation are carried out on the coarse-fraction minerals to obtain iron-containing glass beads and non-magnetic substances, and screening classification and wind classification are carried out on the non-magnetic substances to obtain glass bead products with different fractions. The method is used for solving the problems that gasified fine slag residual carbon and glass beads are difficult to recover and cannot be comprehensively utilized, and meanwhile, the inorganic compatibility is enhanced when the glass beads are used for rubber and plastic filler through surface modification and fine classification of the glass beads.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of solid waste, in particular to a method for recovering glass beads by wet carbon extraction and dry method of gasification slag. Background technique [0002] The fine slag in gasified black water is mainly composed of incompletely gasified inorganic carbon powder and amorphous silicon-aluminum-based melt, with a good dissociation degree. The composition of the aluminum-silicon-based melt is similar to that of boiler ash, and can be used as building materials, roads, etc. Mixed raw materials such as bridges; fine slag particles are mainly divided into four forms: dense amorphous, spherical, irregular porous, and flocculent, of which the main components of dense amorphous, spherical, and flocculent are amorphous aluminum-silicon-based fusion Irregular porous particles are mainly coke particles formed by the expansion and crushing of coal char during the gasification process. Sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B9/06
CPCB03B7/00B03B9/06Y02W30/20Y02W30/60Y02W30/52Y02W30/62
Inventor 刘广学彭团儿黄俊玮赵平李洪潮邵伟华常学勇王力
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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