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A kind of processing method of stone coal

A treatment method, stone coal technology, applied in the field of comprehensive utilization of resources, can solve problems such as high cost, low added value, complex resource recovery process, etc., and achieve the effect of breaking through the bottleneck of inefficiency, obvious economic benefits and environmental benefits

Active Publication Date: 2022-07-22
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a treatment method for stone coal to solve the problems of complex resource recovery process, high cost, low added value and serious environmental pollution in the existing stone coal utilization process

Method used

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  • A kind of processing method of stone coal
  • A kind of processing method of stone coal
  • A kind of processing method of stone coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides a method for processing stone coal, such as figure 1 shown, including the following steps:

[0048] (1) after the stone coal to be treated and the limestone tailings are initially crushed by the crusher respectively, then the two are put into the pulverizer at a ratio of 3:2 for further crushing and uniform mixing;

[0049] Among them, the main components of the stone coal to be treated, the limestone tailings and the mixed materials are shown in Table 1;

[0050] The main components of the stone coal to be treated, the limestone tailings and the mixed material in Table 1 Example 1

[0051] sample V 2 O 5

Fe 2 O 3

C CaO SiO 2

MgO Al 2 O 3

TiO 2

Stone coal to be processed 1.21 6.53 18.44 11.64 50.85 3.89 7.32 0.12 limestone tailings — 15.90 — 50.41 25.23 5.72 2.32 0.42 material after mixing 0.73 10.28 11.06 27.15 40.60 4.62 5.32 0.24

[0052] The acidi...

Embodiment 2

[0059] This embodiment provides a method for processing stone coal, such as figure 1 shown, including the following steps:

[0060] (1) after the stone coal to be treated and the limestone tailings are preliminarily crushed by the crusher respectively, then the two are put into the pulverizer at a ratio of 7:3 for further crushing and uniform mixing;

[0061] Among them, the main components of the stone coal, limestone tailings and mixed materials to be treated are shown in Table 2;

[0062] The main components of the stone coal to be treated, the limestone tailings and the mixed material in the embodiment 2 of table 2

[0063]

[0064]

[0065] The acidity coefficient of the material tailings after mixing is 1.8, and the viscosity-temperature curves of the molten tailings before and after quenching and tempering are as follows: figure 2 shown; by figure 2 It can be seen that after quenching and tempering, the suitable fiber-forming temperature range is in the tempe...

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Abstract

The invention relates to the field of comprehensive utilization of resources, in particular to a method for processing stone coal. The treatment method includes: mixing the stone coal to be treated with an alkaline conditioning agent and a binder, then rolling and forming, drying and then smelting to obtain a vanadium-containing alloy liquid and molten tailings; wherein, the alkaline conditioning The quality agent is limestone tailings and / or steel slag. The invention provides an integrated process of self-reduction smelting extraction of stone coal and full-component utilization of tailings, which can efficiently and cleanly recover various valuable metals in stone coal and reduce the recovery cost, and all the remaining waste residues can be recovered. Value-added utilization, thereby realizing the high-value utilization of all components of stone coal tailings, effectively breaking through the inefficient bottleneck of vanadium extraction from stone coal and solving the environmental pollution problems of waste gas, waste water and waste residue existing in the utilization of existing stone coal resources, and The whole process has obvious economic and environmental benefits, and has obvious advantages for the large-scale utilization of stone coal resources.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of resources, in particular to a method for processing stone coal. Background technique [0002] Stone coal is a black combustible organic rock formed by decay and coalification of the remains of algae, fungi and plankton under reducing conditions. symbiotic metal, so it is also a low-grade symbiotic metal ore. The main material composition of stone coal resources is C, SiO 2 , Al 2 O 3 , CaO, MgO, Fe 2 O 3 , V 2 O 5 , TiO 2 etc., V in common stone coal 2 O 5 The content is generally about 1%, and the carbon content is 8-20%. Stone coal and vanadium titanomagnetite are currently the only two main sources of vanadium resources, and the vanadium-containing reserves of stone coal are 2.7 times that of vanadium-titanomagnetite. It can be seen that the development and utilization of stone coal resources is of great significance. [0003] Vanadium has excellent physical and chemical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/243C22B1/244C22B34/22C22C35/00C21C5/00C03B37/00C03C13/06C04B26/04
CPCC22B1/243C22B1/244C22B1/2406C22B34/22C22C35/00C21C5/00C03C13/06C03B37/00C04B26/04C04B14/46
Inventor 王习东陈子威王昊刘丽丽
Owner PEKING UNIV
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