Cooperative washing process for efficiently utilizing gasified slag

Abstract

The invention provides a cooperative washing process for efficiently utilizing gasified slag, and relates to the field of gasified slag. The cooperative washing process based on efficient utilization of the gasified slag comprises the following steps: a, feeding and preliminary screening: preliminarily screening a gasified slag raw material through a vibrating screen to remove coarse slag with larger particle size, and conveying the screened raw material to a subsequent treatment link through an automatic feeding system, b, crushing: performing secondary crushing on the screened gasified slag by using a high-efficiency energy-saving crusher to ensure that the particle size is uniform; by adopting the high-efficiency and energy-saving crusher, the low-energy-consumption centrifugal dehydrator and the low-temperature and high-efficiency drying equipment, the overall energy consumption in the technological process is greatly reduced, and particularly, the problem of high energy consumption in the traditional process is effectively solved in the links of crushing, dehydrating and drying. Meanwhile, by means of the intelligent dense medium preparation equipment and the multi-layer intelligent grading system, efficient separation and recovery of carbon particles are guaranteed, the recovery rate of carbon is greatly increased, and resource waste is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gasified slag, and in particular to a combined washing process for efficient utilization of gasified slag. Background Art

[0002] The combined washing process for efficient utilization of gasified slag is a process of resource-based industrial by-products. The main steps include crushing, screening, heavy medium separation, flotation, and dehydration and drying of gasified slag. In this process, the gasified slag is first crushed and screened to separate materials of different particle sizes. Subsequently, the carbon-rich particles are separated from inorganic minerals based on density differences using heavy medium separation. Next, the flotation process further purifies the carbon particles to ensure that they can be used as fuel or building materials in subsequent industrial processes. Finally, the water is removed through dehydration and drying processes, and the finished product can be safely stored and transported. The goal of the entire process is to maximize the recovery of useful components in the gasified slag and reduce environmental pollution and waste accumulation.

[0003] The existing gasification slag treatment process still has some obvious defects. The entire treatment process consumes a lot of energy, especially in the crushing, screening and mineral processing processes, which require a lot of energy input. Although a certain proportion of carbon can be recovered through flotation and heavy medium mineral processing, the overall recovery rate of carbon is still not ideal, and some carbon particles cannot be effectively utilized, resulting in a waste of resources. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a combined washing process for efficient utilization of gasified slag, which solves the problem of high energy consumption in the treatment process.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a combined washing process for efficient utilization of gasified slag, comprising:

[0008] a. Loading and preliminary screening: The gasification slag raw materials are preliminarily screened through a vibrating screen to remove coarse slag with larger particle sizes, and the screened raw materials are transported to subsequent processing links through an automated loading system;

[0009] b. Crushing: Use high-efficiency and energy-saving crushers to perform secondary crushing on the screened gasified slag to ensure uniform particle size, which is conducive to subsequent sorting and purification;

[0010] c. Heavy medium beneficiation: Use intelligent heavy medium beneficiation equipment to perform preliminary beneficiation on the crushed fumed slag. Based on the density difference between carbon particles and minerals in the fumed slag, the carbon-rich particles are separated from the inorganic minerals;

[0011] d. Classification: The carbon-rich particles after the initial beneficiation are classified by intelligent classification equipment to obtain carbon particles of different particle sizes and improve the carbon recovery efficiency;

[0012] e. Flotation purification: The classified carbon-rich particles are sent to the high-efficiency flotation equipment, and the carbon particles are purified using environmentally friendly flotation reagents to ensure that the purity of the carbon reaches the reusable standard;

[0013] f. Dehydration: Use a centrifugal high-efficiency dehydrator to dehydrate the carbon particles after flotation to remove excess water and reduce transportation and storage costs;

[0014] g. Drying: Use a low-temperature and high-efficiency dryer to dry the dehydrated carbon particles to ensure that they meet the standards for direct use in industrial fuel or other industrial applications;

[0015] h. Mineral recovery: secondary screening and separation of inorganic minerals after flotation to recover reusable minerals;

[0016] i. Mineral dehydration and filter press: Use filter press to dehydrate inorganic minerals to obtain mineral solid materials for use in building materials or other application fields;

[0017] j. Wastewater treatment: The flotation wastewater, screening wastewater and other wastewater generated in the process are recycled through a closed-loop water treatment system, and the treated water is ensured to meet the reusable standards;

[0018] k. Waste gas and dust treatment: Collect and filter the waste gas and dust in the entire process, and use multi-stage filtering equipment to reduce pollution to the environment;

[0019] l. Intelligent control system: The intelligent control system monitors and adjusts the entire washing process in real time, including crushing, mineral processing, grading, dehydration, drying and wastewater treatment, to optimize energy consumption and resource utilization.

[0020] Preferably, the crushing equipment in step b is a double-stage crusher using high-efficiency energy-saving technology, which can reduce energy consumption per unit material processing and improve crushing efficiency.

[0021] Preferably, the intelligent heavy medium mineral separation equipment in step c adopts a medium with adjustable density to ensure efficient separation of carbon particles and minerals.

[0022] Preferably, the intelligent grading equipment in step d is a multi-layer intelligent grading system, which can automatically adjust grading parameters according to particle size to achieve high-precision grading.

[0023] Preferably, the selected agent in step e is an environmentally friendly agent, which effectively reduces pollution to the environment and improves the recovery rate of carbon particles through physical and chemical properties. The waste gas and dust treatment equipment in step k adopts a multi-stage filtration and adsorption device to ensure that the emission of harmful gases and dust is lower than the national environmental protection standards.

[0024] Preferably, the centrifugal dehydrator in step f is a high-efficiency, low-energy consumption device that can quickly remove excess water from the carbon particles and reduce energy consumption in the subsequent drying process. The low-temperature drying equipment in step g adopts high-efficiency heat transfer technology, which can reduce energy consumption in the drying process without destroying the structure of the carbon particles.

[0025] Preferably, the mineral recovery system in step h includes magnetic separation and gravity separation equipment to improve the recovery rate and purity of inorganic minerals.

[0026] Preferably, the filter press equipment in step i has an intelligent control system that can automatically adjust the filter press time and pressure according to the water content of the minerals to ensure that the degree of dryness of the minerals meets industry standards. The water treatment system in step j adopts a multi-stage physical and chemical filtration device to ensure that the wastewater meets the recycling standard and reduces water resource consumption in the process. The intelligent control system in step l collects and adjusts key parameters such as temperature, pressure, flow, etc. in the process flow in real time through a sensor network and an automatic adjustment module to optimize the process efficiency.

[0027] (III) Beneficial effects

[0028] The present invention provides a combined washing process for efficient utilization of gasified slag, which has the following beneficial effects:

[0029] By adopting energy-efficient crushers, low-energy centrifugal dehydrators and low-temperature high-efficiency drying equipment, the overall energy consumption in the process is greatly reduced, especially in the crushing, dehydration and drying stages, effectively solving the high energy consumption problem in traditional processes. At the same time, the use of intelligent heavy medium beneficiation equipment and multi-layer intelligent grading systems ensures efficient separation and recovery of carbon particles, greatly improving the carbon recovery rate and reducing resource waste.

[0030] By using environmentally friendly flotation reagents, closed-loop water treatment systems, and multi-stage exhaust gas and dust filtration devices, the discharge of wastewater, exhaust gas, and dust is effectively controlled, meeting national environmental protection standards. The introduction of intelligent control systems enables the entire process to be managed automatically, monitor and adjust various process parameters in real time, further optimize resource utilization efficiency, reduce operating costs, and improve the environmental protection and economic benefits of the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The embodiment of the present invention provides a combined washing process for efficient utilization of gasified slag, including: a. feeding and preliminary screening: preliminary screening of the gasified slag raw material through a vibrating screen to remove coarse slag with larger particle size, and conveying the screened raw material to subsequent processing links through an automated feeding system.

[0034] b. Crushing: Use an efficient and energy-saving crusher to perform secondary crushing on the screened gasified slag to ensure uniform particle size, which is conducive to subsequent sorting and purification. The crushing equipment in step b is a two-stage crusher using efficient and energy-saving technology, which can reduce the energy consumption per unit material processing and improve the crushing efficiency.

[0035] c. Heavy medium beneficiation: Use intelligent heavy medium beneficiation equipment to perform preliminary beneficiation on the crushed gasified slag. Based on the density difference between carbon particles and minerals in the gasified slag, the carbon-rich particles are separated from the inorganic minerals. In step c, the intelligent heavy medium beneficiation equipment uses a medium with adjustable density to ensure efficient separation of carbon particles and minerals.

[0036] d. Classification: The carbon-rich particles after the initial beneficiation are classified by intelligent grading equipment to obtain carbon particles of different particle sizes and improve the carbon recovery efficiency. The intelligent grading equipment in step d is a multi-layer intelligent grading system, which can automatically adjust the grading parameters according to the particle size to achieve high-precision grading.

[0037] e. Flotation purification: The classified carbon-rich particles are sent to high-efficiency flotation equipment, and environmentally friendly flotation agents are used to purify the carbon particles to ensure that the purity of the carbon reaches the recyclable standard. The selected agent in step e is an environmentally friendly agent, which effectively reduces pollution to the environment and improves the recovery rate of carbon particles through physical and chemical properties. The exhaust gas and dust treatment equipment in step k adopts multi-stage filtration and adsorption devices to ensure that the emission of harmful gases and dust is lower than the national environmental protection standard.

[0038] f. Dehydration: Use a centrifugal high-efficiency dehydrator to dehydrate the carbon particles after flotation to remove excess water and reduce transportation and storage costs. The centrifugal dehydrator in step f is a high-efficiency and low-energy consumption equipment that can quickly remove excess water from the carbon particles and reduce energy consumption in the subsequent drying process.

[0039] g. Drying: Use a low-temperature and high-efficiency dryer to dry the dehydrated carbon particles to ensure that they meet the standards for direct use as industrial fuel or other industrial applications. The low-temperature drying equipment in step g uses high-efficiency heat transfer technology to reduce energy consumption during the drying process without destroying the structure of the carbon particles.

[0040] h. Mineral recovery: The inorganic minerals after flotation are screened and separated for a second time to recover reusable minerals. The mineral recovery system in step h includes magnetic separation and gravity separation equipment to improve the recovery rate and purity of inorganic minerals.

[0041] i. Mineral dehydration and filtration: Use a filter press to dehydrate inorganic minerals to obtain mineral solid materials for use in building materials or other applications. The filter press equipment in step i has an intelligent control system that can automatically adjust the filtration time and pressure according to the water content of the minerals to ensure that the dryness of the minerals meets industry standards.

[0042] j. Wastewater treatment: The flotation wastewater, screening wastewater and other wastewater generated in the process are recycled through a closed-loop water treatment system, and the treated water is ensured to meet the reusable standards. The step j water treatment system adopts multi-stage physical and chemical filtration devices to ensure that the wastewater meets the recycling standards and reduce the water resource consumption in the process.

[0043] k. Waste gas and dust treatment: The waste gas and dust in the entire process are centrally collected and filtered, and multi-stage filtering equipment is used to reduce pollution to the environment.

[0044] 1. Intelligent control system: The intelligent control system monitors and adjusts the entire washing process in real time, including crushing, mineral processing, grading, dehydration, drying and wastewater treatment, to optimize energy consumption and resource utilization. Step 1 The intelligent control system collects and adjusts key parameters such as temperature, pressure, flow rate and so on in the process in real time through the sensor network and automatic adjustment module to optimize the process efficiency.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined washing process for efficient utilization of gasified slag, characterized in that: include: a. Loading and preliminary screening: The gasification slag raw materials are preliminarily screened through a vibrating screen to remove coarse slag with larger particle sizes, and the screened raw materials are transported to subsequent processing links through an automated loading system; b. Crushing: Use high-efficiency and energy-saving crushers to perform secondary crushing on the screened gasified slag to ensure uniform particle size, which is conducive to subsequent sorting and purification; c. Heavy medium beneficiation: Use intelligent heavy medium beneficiation equipment to perform preliminary beneficiation on the crushed fumed slag. Based on the density difference between carbon particles and minerals in the fumed slag, the carbon-rich particles are separated from the inorganic minerals; d. Classification: The carbon-rich particles after the initial beneficiation are classified by intelligent classification equipment to obtain carbon particles of different particle sizes and improve the carbon recovery efficiency; e. Flotation purification: The classified carbon-rich particles are sent to the high-efficiency flotation equipment, and the carbon particles are purified using environmentally friendly flotation reagents to ensure that the purity of the carbon reaches the reusable standard; f. Dehydration: Use a centrifugal high-efficiency dehydrator to dehydrate the carbon particles after flotation to remove excess water and reduce transportation and storage costs; g. Drying: Use a low-temperature and high-efficiency dryer to dry the dehydrated carbon particles to ensure that they meet the standards for direct use in industrial fuel or other industrial applications; h. Mineral recovery: secondary screening and separation of inorganic minerals after flotation to recover reusable minerals; i. Mineral dehydration and filter press: Use filter press to dehydrate inorganic minerals to obtain mineral solid materials for use in building materials or other application fields; j. Wastewater treatment: The flotation wastewater, screening wastewater and other wastewater generated in the process are recycled through a closed-loop water treatment system, and the treated water is ensured to meet the reusable standards; k. Waste gas and dust treatment: Collect and filter the waste gas and dust in the entire process, and use multi-stage filtering equipment to reduce pollution to the environment; l. Intelligent control system: The intelligent control system monitors and adjusts the entire washing process in real time, including crushing, mineral processing, grading, dehydration, drying and wastewater treatment, to optimize energy consumption and resource utilization.

2. The combined washing process for efficient utilization of gasified slag according to claim 1, characterized in that: The crushing equipment in step b is a double-stage crusher using high-efficiency energy-saving technology, which can reduce energy consumption per unit material processing and improve crushing efficiency.

3. The combined washing process for efficient utilization of gasified slag according to claim 1, characterized in that: The intelligent heavy medium mineral separation equipment in step c adopts a medium with adjustable density to ensure efficient separation of carbon particles and minerals.

4. The combined washing process for efficient utilization of gasified slag according to claim 1, characterized in that: The intelligent grading equipment in step d is a multi-layer intelligent grading system, which can automatically adjust the grading parameters according to the particle size to achieve high-precision grading.

5. The combined washing process for efficient utilization of gasified slag according to claim 1, characterized in that: The selected agent in step e is an environmentally friendly agent, which effectively reduces pollution to the environment and improves the recovery rate of carbon particles through physical and chemical properties. The waste gas and dust treatment equipment in step k adopts a multi-stage filtration and adsorption device to ensure that the emission of harmful gases and dust is lower than the national environmental protection standard.

6. The combined washing process for efficient utilization of gasified slag according to claim 1, characterized in that: The centrifugal dehydrator in step f is a high-efficiency, low-energy consumption device that can quickly remove excess water from the carbon particles and reduce energy consumption in the subsequent drying process. The low-temperature drying equipment in step g adopts high-efficiency heat transfer technology, which can reduce energy consumption in the drying process without destroying the structure of the carbon particles.

7. The combined washing process for efficient utilization of gasified slag according to claim 1, characterized in that: The mineral recovery system in step h includes magnetic separation and gravity separation equipment to improve the recovery rate and purity of inorganic minerals.

8. The combined washing process for efficient utilization of gasified slag according to claim 1, characterized in that: The filter press equipment in step i has an intelligent control system that can automatically adjust the filter press time and pressure according to the water content of the minerals to ensure that the degree of dryness of the minerals meets industry standards. The water treatment system in step j adopts multi-stage physical and chemical filtration devices to ensure that the wastewater meets the recycling standards and reduces water resource consumption in the process. The intelligent control system in step l uses a sensor network and an automatic adjustment module to collect and adjust key parameters such as temperature, pressure, flow, etc. in the process in real time to optimize process efficiency.

Images