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Granular oil shale pelletizing process and device

A technology of kerogen shale and small particles, which is applied in the field of waste gas kerogen shale reuse, which can solve the problems of high energy consumption, continuous production of difficult industrial equipment, long time of ball rolling process, etc., and achieve the effect of preventing pollution

Active Publication Date: 2015-10-28
FUSHUN EAST CHINA ENERGY TECH R & D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the existing methods have disadvantages such as long ball forming and rolling process time, high energy consumption, unstable product quality, etc., and it is difficult to ensure continuous production of industrial equipment

Method used

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  • Granular oil shale pelletizing process and device
  • Granular oil shale pelletizing process and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] This embodiment provides a small particle kerogen shale pelletizing process, which includes the following steps:

[0056] A. Screening: The discarded oil shale tailings are screened to obtain small grains of oil shale with a particle size less than or equal to 3mm;

[0057] B. Kneading: mixing and kneading the small particle kerogen obtained in step A and the binder, so that the small particle kerogen is initially pulverized and fully mixed with the binder;

[0058] C. Rolling: crushing and rolling the small particle kerogen shale and binder that have been preliminarily crushed and fully mixed in step B, so as to obtain plastic kerogen shale;

[0059] D. Balling: processing the plastic kerogen shale obtained in step C into a spherical shape to obtain spherical kerogen shale;

[0060] E. Screening: Screen the spherical kerogen shale obtained in step E, and the spherical kerogen shale with a particle size greater than or equal to 40mm is a qualified product, and the sphe...

Embodiment 2

[0065] Such as figure 2 As shown, this embodiment provides a small particle kerogen shale pelletizing device, which is used in the above small particle kerogen shale pelletizing process, including: a raw material warehouse 101, a first weighing belt conveyor 102, and a first bucket elevator 103 , kneading machine, wheel rolling machine, the second weighing belt conveyor 105, pressure ball forming machine, circular vibrating screen 110, the first belt conveyor 108, the second belt conveyor 112, the second bucket elevator 109, sticky The binder mixing tank 114 and the binder metering pump 113; the binder mixing tank 114 is connected to the kneader through the binder metering pump 113; the raw material bin 101 is provided with a vibrating screen, and the circular vibrating screen 110 is provided with a finished product outlet And return ore outlet.

[0066] The first weighing belt conveyor 102 is located below the discharge port of the raw material bin 101, the feed port of the...

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Abstract

The invention provides a granular oil shale pelletizing process and device and belongs to the technical field of exhaust oil shale recycling. The granular oil shale pelletizing process comprises the steps of sieving, kneading, rolling, pelletizing and screening. The granular oil shale pelletizing device comprises a raw material bin, a first weighing belt conveyor, a first bucket elevator, a kneading machine, a wheel roller, a second weighing belt conveyor, a ball-pressing forming machine, a circular vibrating screen, a first belt conveyor, a second belt conveyor, a second bucket elevator, a binder agitation tank and a binder metering pump. According to the granular oil shale pelletizing process and device, through the kneading process, the rolling time is shortened, the energy consumption is reduced, the product quality stability is improved, and continuous production of the pelletizing device is facilitated; meanwhile, through re-rolling of rejected products, clearances caused during re-pelletizing are prevented, and the stability of the re-pelletized products is improved.

Description

technical field [0001] The invention relates to the technical field of recycling waste gas kerogen shale, in particular to a small particle kerogen shale pelletizing process and a pelletizing device. Background technique [0002] Oil shale is a solid fossil fuel with huge reserves between coal and petroleum. Shale oil can be produced after dry distillation at about 500°C. Shale oil has superior performance and is widely used. It can be used as an important petroleum supplement and alternative energy source, as a raw material for petroleum processing and chemical production, and can also be blended to produce marine fuel oil as needed. [0003] The oil shale mine adopts open-pit mining. The oil shale with a particle size of <300mm transported from the original mining area is secondary crushed and screened, and the finished oil shale with a particle size of 12-75mm is transferred to the retort feeding system; the small particle size of the oil shale with a particle size of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J2/00B01J2/28C10B53/06C10B57/00
Inventor 范春燕赵剑龙冯斌
Owner FUSHUN EAST CHINA ENERGY TECH R & D CO LTD
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