A method for preparing plastic filler using gasification slag as raw material

A technology for gasification slag and coal gasification slag, applied in chemical instruments and methods, solid separation, grain processing, etc. The effect of improving the effect and crushing efficiency, saving natural mineral resources, and shortening the process flow

Active Publication Date: 2022-06-17
山西奇色环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) The structure is particularly porous and the carbon residue is high;
[0007] (2) The composition of gasification slag is unstable, and the regional differences are large;
[0008] (3) The coal chemical industry is an emerging industry, and the utilization of solid waste has not been put on the agenda
[0015] Compared with fly ash, gasification slag has a high carbon content and a porous structure, which leads to common shortcomings in current research, such as low dosage, high cost, secondary pollution, poor performance, and difficulty in industrialization.

Method used

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  • A method for preparing plastic filler using gasification slag as raw material
  • A method for preparing plastic filler using gasification slag as raw material
  • A method for preparing plastic filler using gasification slag as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see figure 1 , a method for preparing plastic filler with gasification slag as raw material, has the following steps:

[0040] (1) Raw material pretreatment

[0041] The coal gasification slag is directly treated or the coal gasification slag is prepared into a slurry for treatment. The raw material pretreatment process includes a decarbonization stage, a magnetic separation stage and a dehydration stage; the decarbonization is determined according to the actual carbon content in the coal gasification slag. Whether the carbonization stage is carried out or not, the decarburization stage is to use the flotation process or the gravity separation process to remove the carbon part of the coal gasification slag. When the carbon content in the coal gasification slag raw material is greater than 5%, the oil absorption value of the subsequent products will be too large. , affecting the processing performance of the subsequent products, it is necessary to decarbonize the coal g...

Embodiment 2

[0047] combine figure 1 Embodiment 1 is further described and explained in detail, and the decarbonization stage, magnetic separation stage, and dehydration stage are freely adjusted and combined according to the content of each component in the coal gasification slag to realize the raw material pretreatment process;

[0048] When the flotation process is adopted in the decarburization stage, kerosene or light diesel oil is used as a collector, sec-octanol or No. 2 oil is used as a foaming agent, and water circulation is used for flotation; the amount of the foaming agent is coal gasification. 0.005-0.1% of the total slag, and the amount of the collector is 0.02-0.5% of the total coal gasification slag;

[0049] In the magnetic separation stage, various heavy metals such as iron oxide, titanium oxide, manganese oxide and chromium oxide in the coal gasification slag are removed, and the magnetic field intensity of the magnetic separator in the magnetic separation stage is adjus...

Embodiment 3

[0056] In the coal gasification slag produced by a company's production process, the residual carbon content is 15.3%, the iron oxide content is 3.6%, the manganese oxide is not detected, and the moisture content is 4%. Flash drying, magnetic separation for iron removal.

[0057] First, the coal gasification slag was made into a slurry with a concentration of 30%, with 0.1% kerosene as the collector and 0.05% sec-octanol as the detonator, and flotation for 3 times; Magnetic separation under high strength for 1 time; dewater the slurry with a filter press to a water content of 15% after concentrating the slurry; use flash drying equipment to dry the coal gasification slag after flotation under the conditions of an inlet temperature of 200 °C and an outlet temperature of 100 °C ; Then, the dried material is fed into the steam kinetic energy mill with a screw feeder, using superheated steam of 0.7MPa and 290°C, the speed of the classifier is 1500rpm, the slag discharge port is fu...

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Abstract

The invention discloses a method for preparing plastic packing by using gasification slag as a raw material. The pretreatment process includes the decarbonization stage, the magnetic separation stage and the dehydration stage; (2) Ultrafine crushing and modification integrated treatment, the coal gasification slag that has been pretreated by raw materials is crushed and modified by integrated equipment Ultrafine crushing to a certain particle size under the action of additives; (3) heat preservation and mixing treatment, the pulverized ultrafine coal gasification slag is fully mixed at a certain temperature for a period of time, and the residual water in the material is removed to finally obtain a plastic Inorganic filler for products. The products produced by the invention can replace inorganic fillers such as heavy calcium, light calcium, nano-calcium carbonate, kaolin, and pottery clay commonly used in the current plastics industry. While saving natural mineral resources, it can truly realize the green and high value-added utilization of coal gasification slag.

Description

technical field [0001] The invention relates to the technical field of industrial solid waste treatment, in particular to a method for preparing a plastic filler by using gasification slag as a raw material. Background technique [0002] Coal gasification technology is one of the core contents of clean coal technology in my country and the foundation of modern coal chemical industry. Converting coal into clean energy such as gas and oil through coal chemical technology can not only control the pollution of coal burning at the source, but also effectively adjust the energy structure of my country's "rich coal, lean oil and little gas". In consideration of environmental protection and energy security, a large number of coal gasification enterprises have been put into operation in Shaanxi, Shanxi, Xinjiang, Inner Mongolia and other provinces in recent years, and the output has also increased year by year. The coal chemical industry has begun to take shape in my country. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/04B02C21/00B03C1/30B02C23/06B02C23/18B02C25/00B03D1/008B03D101/02B03D101/04
CPCB03B9/04B02C21/00B03C1/30B02C23/06B02C23/18B02C25/00B03D1/008B03D2201/02B03D2201/04
Inventor 周叶红任冬寅郭晨夫尚志新
Owner 山西奇色环保科技股份有限公司
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