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Device and method for treating mining waste through in-situ carbonization of biomass

A technology of carbonization treatment and biomass, applied in the direction of chemical instruments and methods, solid waste removal, transportation and packaging, etc., can solve the problems of pollutants seeping out, endangering the environment and human health, prone to invisible hazards, and damage to building materials, etc. Achieve the effects of accelerating physical weathering, improving fertility, and flexible regulation

Active Publication Date: 2019-10-25
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the direction of more research is the preparation of building materials, such as a green building material-biocement preparation method (CN106587681B), a production method and application of biocement based on low-priced calcium ions (CN107176798A), a development Foam cement composite self-insulating brick and its processing technology (CN104446193B), etc. These methods are a better resource utilization direction, but there will be some potential hazards, such as whether the oxidation of tailings will lead to damage to building materials, Whether polluted soil will cause pollutants to leak out and endanger the environment or human health, etc., cannot solve its potential safety problems, and is prone to invisible hazards

Method used

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  • Device and method for treating mining waste through in-situ carbonization of biomass
  • Device and method for treating mining waste through in-situ carbonization of biomass

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Effect test

Embodiment 1

[0044] A treatment method for a device for in-situ carbonization of biomass to treat mining waste, comprising the following steps:

[0045] S1. Mixed material preparation: crush the biomass and mining waste according to the mass ratio of 3:7 and mix them evenly;

[0046] S2. Feeding: Add the mixed material prepared in step S1 into the reactor 1, the feeding rate is 50~150kg / min, and the feeding amount is 2 / 3 of the volume of the reactor 1;

[0047] S3. Carbonization reaction of the mixed material: ignite the mixed material from the discharge ventilation grid structure, start the fan 2, and the combustion-supporting air enters the reactor 1 from the discharge ventilation grid structure and goes upward, and the smoke generated by combustion is blown The fan 2 is introduced into the dust collector 3 for dust removal. During the reaction period, the flow rate of the combustion-supporting air entering the reactor 1 is controlled by the flow valve 6 to be 15L / min. When the temperatu...

Embodiment 2

[0050] A treatment method for a device for in-situ carbonization of biomass to treat mining waste, comprising the following steps:

[0051]S1. Preparation of mixed materials: crush biomass and mining waste in a mass ratio of 3:7, wherein the mining waste is polluted soil and waste earth and stone in a mass ratio of 5:1, crush and mix evenly;

[0052] S2. Feeding: Add the mixed material prepared in step S1 into the reactor 1, the feeding rate is 50~150kg / min, and the feeding amount is 2 / 3 of the volume of the reactor 1;

[0053] S3. Carbonization reaction of the mixed material: ignite the mixed material from the discharge ventilation grid structure, start the fan 2, and the combustion-supporting air enters the reactor 1 from the discharge ventilation grid structure and goes upward, and the smoke generated by combustion is blown The fan 2 is introduced into the dust collector 3 for dust removal. During the reaction period, the flow rate of the combustion-supporting air entering ...

Embodiment 3

[0056] A treatment method for a device for in-situ carbonization of biomass to treat mining waste, comprising the following steps:

[0057] S1. Preparation of mixed materials: crush biomass and mining waste in a mass ratio of 3:7, wherein the mining waste is polluted soil and tailings in a mass ratio of 5:2, pulverize and mix evenly;

[0058] S2. Feeding: Add the mixed material prepared in step S1 into the reactor 1, the feeding rate is 50~150kg / min, and the feeding amount is 2 / 3 of the volume of the reactor 1;

[0059] S3. Carbonization reaction of the mixed material: ignite the mixed material from the discharge ventilation grid structure, start the fan 2, and the combustion-supporting air enters the reactor 1 from the discharge ventilation grid structure and goes upward, and the smoke generated by combustion is blown The fan 2 is introduced into the dust collector 3 for dust removal. During the reaction period, the flow rate of the combustion-supporting air entering the reac...

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Abstract

The invention discloses a device and method for treating mining waste through in-situ carbonization of biomass. The device comprises a reactor, a draught fan, a dust remover, a pressure measurer, a temperature measurer and a flow valve. The device can conveniently regulate the flow rate of combustion-supporting air, thereby regulating the carbonization degree of the biomass in the reactor; and thedevice has the advantage of flexible regulation. The method comprises the following steps of: preparing a mixture, feeding, carrying out carbonization reaction of the mixture, and discharging. Afterthe mining waste and the biomass are mixed, carbonized and treated by the device, the fertility of the mining waste can be effectively improved, the pH is increased, and the physical weathering and chemical weathering of the mining waste are accelerated; the thermal decomposition enables the content of metal sulfide in the mining waste to be reduced; and the quality improvement of the mining wasteis realized.

Description

technical field [0001] The invention belongs to the technical field of mining waste treatment, and in particular relates to a device and a treatment method for in-situ carbonization of biomass to treat mining waste. Background technique [0002] Mining waste refers to the waste generated in the mining production process and polluted soil, such as tailings, waste earth and rocks, polluted soil, etc. A large amount of mining waste is piled up, and some of the debris formed by weathering will be washed into the water area by water, or even dissolve and seep into the groundwater, and some will be blown into the atmosphere by the wind, seriously polluting the environment. Moreover, some of these wastes contain harmful elements, which pose a threat to human health. Moreover, during the accumulation of mining waste, serious disasters such as landslides and mudslides will be caused. [0003] Stacking is a traditional disposal method for mining waste. Waste rocks are transported to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
CPCB09B3/00B09B5/00B09B3/40
Inventor 田森林黄建洪赵群胡学伟李英杰李波陈杰宁平
Owner KUNMING UNIV OF SCI & TECH
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