Method for preparing zeolitized particle material by using coal gangue powder generation dust residue

A technology for granular materials and coal gangue, which is applied in the field of solid waste resource utilization and water treatment materials, can solve problems such as being unsuitable for industrial application, unable to reasonably solve the problems of effective resource utilization of gangue power generation ash and slag, and complicated methods, and achieving easy Pulverizing, weakening the clogging of the filter material layer, and good filtering performance

Active Publication Date: 2019-01-18
陈赫然
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are also some research reports using aluminum in it to produce water purifiers and aluminum hydroxide, but the methods are very complicated and not suitable for industrial applications, so they cannot reasonably solve the problem of effective resource utilization of gangue power generation ash

Method used

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  • Method for preparing zeolitized particle material by using coal gangue powder generation dust residue
  • Method for preparing zeolitized particle material by using coal gangue powder generation dust residue
  • Method for preparing zeolitized particle material by using coal gangue powder generation dust residue

Examples

Experimental program
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Effect test

Embodiment 1

[0023] (1) Process the coal gangue power generation ash in the drum type tank mill for 1 hour, carry out selective crushing and screening, and obtain five particle sizes of figure 1 , figure 2 shown.

[0024] (2) preparing mass concentration is 15% sodium hydroxide solution.

[0025] (3) According to <0.5, 0.5~1, 1~3, 3-5, 5-8mm, the solid-liquid ratio of particles and sodium hydroxide solution is 1g:3mL, 1g:2mL, 1g:1mL respectively , 1g:1mL, 1g:1mL, the particles of different particle sizes and sodium hydroxide solution were added to the reactor.

[0026] (4) Heat the material in the reactor to 90°C, and keep it warm for several hours (the corresponding reaction time for the five particle sizes of <0.5, 0.5~1, 1~3, 3-5, 5-8mm is 8h respectively , 12h, 24h, 24h, 24h), during the reaction process, the pump is used to extract the solution from the bottom of the reactor and transport it to the top of the reactor, so that the solution in the reactor flows through the granular m...

Embodiment 2

[0031] (1) Process the coal gangue power generation ash in the drum type tank mill for 1 hour, carry out selective crushing and screening, and obtain four particle sizes of <0.5, 0.5-1, 1-3, and 3-8mm.

[0032] (2) Prepare a sodium hydroxide solution with a mass concentration of 10%.

[0033] (3) According to the solid-to-liquid ratio of 1g:2mL, particles of different particle sizes and sodium hydroxide solution were added to the reactor.

[0034] (4) Heat the material in the reactor to 90°C, keep the temperature for 36 hours, and use a pump to extract the solution from the bottom of the reactor to the top of the reactor during the reaction, so that the solution in the reactor flows through the granular material in a seepage manner, Realize liquid mixing during the reaction process, and promote the active silicon-aluminum components in the particles to crystallize and grow 4A zeolite in the sodium hydroxide solution.

[0035] (5) After the reaction, the particles are taken out,...

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Abstract

The invention discloses a method for preparing a zeolitized particle material by using coal gangue power generation dust residue. The method comprises the steps that the dust residue is selectively smashed and screened in a drum type pot mill to obtain particles with different grain sizes, and the particles are sorted to a plurality of grain levels according to demands; the particles at differentgrain levels are respectively added into a sodium hydroxide solution to be subjected to a hydrothermal reaction, thus the surface of the particles crystalizes and grows 4A zeolite, that is, the zeolitized particle material. The zeolitized particle material prepared by the method can be widely applied to percolation fillers for treating polluted rainwater, river water, lake water, domestic wastewater and the like in sponge city construction, and has the advantages that the sources of the raw materials are wide, the waste is comprehensively utilized, and the preparation cost is low.

Description

technical field [0001] The invention belongs to the technical field of solid waste resource utilization and water treatment materials, and in particular relates to a method for resource utilization of coal gangue power generation ash to obtain water pollution control materials. Background technique [0002] Coal is the most important energy source in my country, with an annual output of more than 6 billion tons of standard coal. The mined raw coal contains more rocks with low calorific value, mainly carbonaceous shale and mudstone. In order to reduce the ash content of coal and reduce transportation costs, coal washing is an important coal processing step, and the solid waste discharged from washing coal is called washing coal gangue. [0003] Washed coal gangue is mainly a mixture of carbonaceous, muddy and sandy shale, with a carbon content of 15% to 30%, a high calorific value (800 to 1500kcal / Kg), and its inorganic components are mainly silicon and aluminum , Ca, Mg, F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/14
CPCC01B39/14C01P2004/03
Inventor 陈赫然陈天虎
Owner 陈赫然
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