CN114850032A - A kind of mist dry separation method and system - Google Patents
A kind of mist dry separation method and system Download PDFInfo
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- CN114850032A CN114850032A CN202210489047.3A CN202210489047A CN114850032A CN 114850032 A CN114850032 A CN 114850032A CN 202210489047 A CN202210489047 A CN 202210489047A CN 114850032 A CN114850032 A CN 114850032A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/08—Cleaning arrangements
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Abstract
本发明涉及一种雾气干法分选方法和系统,主要包括原料制备单元,雾气制备单元,压气单元,干选单元,循环净化单元,产品单元等,通过用雾气介质替代空气介质实现雾气干选,从根源上消减了现有干选机中大量产生的干粉尘,改变了现有技术中存在的微粉尘处理难题,并消除了微粉尘存在的爆炸隐患,实现了系统简单、运行稳定、可靠性高、分选成本低、环保的雾气干法分选方法和系统,是一种目前分选行业内全新的经济高效的雾气干法分选方法和系统,特别适应于高瓦斯矿井中使用,且对块煤干法排矸系统更简单。
The invention relates to a mist dry separation method and system, which mainly includes a raw material preparation unit, a mist preparation unit, a pressure unit, a dry separation unit, a circulating purification unit, a product unit, etc., and the mist dry separation is realized by replacing the air medium with a mist medium. , from the root cause of the dry dust generated in the existing dry separator is reduced, the problem of micro dust treatment in the existing technology is changed, and the explosion hidden danger of micro dust is eliminated, and the system is simple, stable and reliable in operation. The mist dry separation method and system with high performance, low separation cost and environmental protection are a brand-new economical and efficient mist dry separation method and system in the separation industry, especially suitable for use in high gas mines. And the dry gangue discharge system for lump coal is simpler.
Description
所属技术领域Technical field
本发明涉及一种干法分选方法和系统,尤其是涉及一种适用于煤炭、矿石及其它物料的雾气干法分选方法和系统。The invention relates to a dry separation method and system, in particular to a mist dry separation method and system suitable for coal, ore and other materials.
背景技术Background technique
目前应用到工业上以空气为介质的干法分选设备主要有空气跳汰分选机、复合式干法分选机等等。空气跳汰分选机在布风板下部给入脉动空气流,形成变速介质流,分选入料在变速介质流中进行周期性的分散和沉降,在一定时间内完成按密度为主导因素的分层,从而实现分选。复合式干法分选机,不同密度的颗粒受到风力、激振力、重力以及床面摩擦力共同作用,按照位能趋小理论实现按密度为主导因素的分离。以上方法中因以空气介质流为主动力源,工作中空气流把物料中的微颗粒带到气流中,产生了大量的粉尘,因此存在如下较难突破的卡脖子问题:一是微粉尘处理较困难,成本高,容易产生环境污染;二是微粉尘存在爆炸的危险,在有防爆要求的环境,例如在煤矿井下,特别是高瓦斯矿井中不能使用。At present, the dry sorting equipment that uses air as the medium in the industry mainly includes air jig sorting machine, composite dry sorting machine and so on. The air jig separator feeds a pulsating air flow at the lower part of the air distribution plate to form a variable-speed medium flow. The classified materials are periodically dispersed and settled in the variable-speed medium flow, and the density is the dominant factor within a certain period of time. Layered to achieve sorting. In the composite dry sorter, particles of different densities are subjected to the combined action of wind force, excitation force, gravity and bed surface friction. According to the theory of potential energy decreasing, the separation is realized according to the density as the dominant factor. In the above methods, the air medium flow is the main power source. During the work, the air flow brings the micro-particles in the material into the air flow, and a large amount of dust is generated. Therefore, there are the following problems that are difficult to break through: First, the treatment of micro-dust It is difficult, expensive, and prone to environmental pollution. Second, there is a danger of explosion of fine dust, and it cannot be used in environments with explosion-proof requirements, such as underground coal mines, especially in high gas mines.
发明内容SUMMARY OF THE INVENTION
本发明的目的是克服已有技术中的不足之处,通过用雾气介质替代空气介质实现雾气干选,从根源上减消在现有干选机中大量产生的干粉尘,从而改变微粉尘处理难题,并消除微粉尘的爆炸隐患,达到系统简单、运行稳定、可靠性高、分选成本低、环保的雾气干法分选方法和系统。The object of the present invention is to overcome the deficiencies in the prior art, realize the mist dry selection by replacing the air medium with the mist medium, reduce the dry dust produced in large quantities in the existing dry separator from the root, thereby changing the micro-dust treatment Problems, and eliminate the explosion hidden danger of fine dust, to achieve a simple system, stable operation, high reliability, low separation cost, environmental protection mist dry separation method and system.
本发明的技术方案概述如下:The technical scheme of the present invention is summarized as follows:
一种雾气干法分选方法,包括现有以空气为介质的干选方法,其中用雾气介质替代空气介质实现干选,减消在现有干选机中大量产生的干粉尘。A mist dry sorting method, including the existing dry sorting method using air as a medium, wherein the dry sorting is realized by replacing the air medium with a mist medium, and the dry dust produced in a large amount in the existing dry sorting machine is reduced.
本发明的雾气干法分选方法,其中所述雾气介质为干雾。In the mist dry separation method of the present invention, the mist medium is dry mist.
本发明的雾气干法分选方法,其中所述雾气介质为湿雾。In the mist dry separation method of the present invention, the mist medium is wet mist.
本发明的雾气干法分选方法,其中所述雾气介质为过饱和水雾。In the mist dry separation method of the present invention, the mist medium is supersaturated water mist.
本发明的雾气干法分选方法,其中所述雾气介质为两种或两种以上介质混合产生的雾气。In the mist dry separation method of the present invention, the mist medium is a mist produced by mixing two or more media.
本发明的雾气干法分选方法,其中所述雾气介质为水和发泡剂作用生成的水泡沫雾气。In the mist dry separation method of the present invention, the mist medium is a water foam mist generated by the action of water and a foaming agent.
一种雾气干法分选系统,主要包括原料制备单元,雾气制备单元,压气单元,干选单元,循环净化单元,产品单元等。所述原料制备单元将制备好的被分选物料送入干选单元,所述雾气制备单元将制备好的雾送入压气单元,所述压气单元将混合的雾气送入干选单元,所述干选单元分选后的产品进入产品单元,所述干选单元产生的废气进入循环净化单元,所述循环净化单元净化后的空气进入压气单元,所述循环净化单元分离的微颗粒进入产品单元。A mist dry separation system mainly includes a raw material preparation unit, a mist preparation unit, an air compression unit, a dry separation unit, a circulating purification unit, a product unit, and the like. The raw material preparation unit sends the prepared material to be sorted into the dry separation unit, the mist preparation unit sends the prepared mist into the air compression unit, and the air compression unit sends the mixed mist into the dry separation unit, the The products sorted by the dry separation unit enter the product unit, the exhaust gas generated by the dry separation unit enters the circulation purification unit, the air purified by the circulation purification unit enters the air compression unit, and the microparticles separated by the circulation purification unit enter the product unit. .
本发明的雾气干法分选系统,其中所述雾气制备单元和压气单元可复合为一个单元。In the mist dry separation system of the present invention, the mist preparation unit and the gas compression unit can be combined into one unit.
本发明与现有技术相比,充分显示了如下优点:Compared with the prior art, the present invention fully shows the following advantages:
①分选机中消减了干粉尘,避开了容易污染环境难题;①Dry dust is reduced in the sorting machine, which avoids the problem of easy environmental pollution;
②分选机中消减了干粉尘,消除了爆炸隐患;②Dry dust is reduced in the sorting machine and the hidden danger of explosion is eliminated;
③系统简单、运行稳定、可靠性高、分选成本低、环保。综上所述,本发明的优点是:消减了干粉尘,避开了容易污染环境难题,消除了爆炸隐患,系统简单,运行稳定、可靠性高、分选成本低、环保,是一种目前分选行业内全新的经济高效的雾气干法分选方法和系统,特别适应于高瓦斯矿井中使用,且对块煤排矸系统更简单。③Simple system, stable operation, high reliability, low sorting cost and environmental protection. To sum up, the advantages of the present invention are: reducing dry dust, avoiding the problem of easily polluting the environment, eliminating the hidden danger of explosion, simple system, stable operation, high reliability, low sorting cost, and environmental protection. The new economical and efficient fog dry separation method and system in the separation industry is especially suitable for use in high gas mines, and the system for lump coal gangue discharge is simpler.
附图说明:Description of drawings:
图1表示一种雾气干法分选系统示意图。Figure 1 shows a schematic diagram of a mist dry separation system.
具体实施方式:Detailed ways:
实施例1:一种雾气干法分选方法,包括现有以空气为介质的干选方法,如空气跳汰分选方法、复合式干法分选方法等等,还可以是以振动筛或摇床(包括但不仅限于该两种设备)为基础,结合空气流所构建出来的其他干选方法,在上述方法中,本发明用雾气介质替代空气介质实现雾气环境下的干法分选,从根源上减消了现有干选机中大量产生的干粉尘,实现了发明目的。Embodiment 1: A mist dry sorting method, including existing dry sorting methods using air as a medium, such as air jigging sorting methods, composite dry sorting methods, etc. Shakers (including but not limited to these two kinds of equipment) are based on other dry sorting methods constructed in combination with air flow. In the above methods, the present invention uses mist medium instead of air medium to realize dry sorting in mist environment, The dry dust produced in a large amount in the existing dry separator is reduced from the root, and the purpose of the invention is achieved.
基于同样的原理和方法,在上述实施例中,把所述雾气介质替换为干雾,或者为湿雾,或者为过饱和水雾,或者为两种或两种以上介质混合产生的雾气,或者为水和发泡剂作用生成的水泡沫雾气,再或者对特定物料所述介质为饱和水蒸气等等(包括但不限于以上几种),也能达到同样目的和效果。Based on the same principle and method, in the above embodiment, the mist medium is replaced with dry mist, or wet mist, or supersaturated water mist, or mist produced by mixing two or more media, or The same purpose and effect can also be achieved by the water foam mist generated by the action of water and the foaming agent, or by using saturated water vapor as the medium for specific materials (including but not limited to the above).
实施例2:以下结合附图1对本发明的雾气干法分选系统及工艺流程作如下详述:本发明的一种雾气干法分选系统,主要包括原料制备单元,雾气制备单元,压气单元,干选单元,循环净化单元,产品单元等。所述原料制备单元按分选目标要求将原料通过破碎筛分等工艺(包括但不仅限于),制备成干选机需要的物料后,把被分选物料送入干选单元,如果是块料分选,把筛下物料另送入产品单元;所述雾气制备单元按分选目标及物料的要求选择适合的雾气和雾量,所述雾气种类如实施例1所述,目的要达到经济、合理,所述雾量要达到除去干微粉尘的目的,制备好后,按工作流程需要送入压气单元,所述送入点,可以在风机前,也可以在风机后;所述压气单元按照分选目标要求将循环净化气和雾气混合后按需送入干选单元;所述干选单元开动设备后进入的被分选物料,在雾气流及所述设备运动力的共同作用下实现分选,分选过程中所述雾气中的雾与被分选物料中干微尘颗粒结合,或与被分选物料表面粘附的干微尘颗粒结合,使干微尘湿化,湿后的微尘,一部分被被分选物料带走,一部分脱离物料被气流带入废气中,所述分选后的精矿和中矿及尾矿产品分别送到产品单元的各产品仓中,分选后的废气送入循环净化单元;所述循环净化单元按要求将废气中的物料微颗粒回收并送入产品单元单元料仓中,净化后的空气送入压气单元循环使用。Embodiment 2: The fog dry sorting system and process flow of the present invention are described in detail below in conjunction with accompanying drawing 1: A fog dry sorting system of the present invention mainly includes a raw material preparation unit, a mist preparation unit, and a pressure unit. , dry selection unit, circulating purification unit, product unit, etc. The raw material preparation unit prepares the raw materials into the materials required by the dry sorting machine through processes such as crushing and screening according to the requirements of the sorting target (including but not limited to), and then sends the sorted materials to the dry sorting unit. Selection, the material under the sieve is sent to the product unit separately; the mist preparation unit selects suitable mist and mist amount according to the sorting target and the requirements of the material, the mist type is as described in Example 1, and the purpose is to achieve economical and reasonable, To achieve the purpose of removing dry micro-dust, the mist volume should be sent to the air compressor unit according to the needs of the work flow after preparation. The feeding point can be before the fan or after the fan; The goal is to mix the circulating purified gas and the mist and send it to the dry separation unit as needed; the material to be sorted that enters after the dry separation unit starts the equipment is sorted under the combined action of the mist airflow and the movement force of the equipment. During the sorting process, the mist in the mist is combined with the dry fine dust particles in the sorted material, or with the dry fine dust particles adhered to the surface of the sorted material, so that the dry fine dust is humidified, and the wet fine dust particles are combined. , a part is taken away by the sorted material, and a part of the separated material is carried into the exhaust gas by the air flow. The sorted concentrate, medium ore and tailings products are respectively sent to each product bin of the product unit. The waste gas is sent to the circulation purification unit; the circulation purification unit recovers the material particles in the waste gas and sends them into the product unit unit silo as required, and the purified air is sent to the air compressor unit for recycling.
基于同样的原理和方法,上述实施例中,把雾气制备单元和压气单元可复合为一个单元,即用一体化设备完成,同样能达到发明目的和效果。Based on the same principle and method, in the above embodiment, the mist preparation unit and the gas pressure unit can be combined into one unit, that is, completed by an integrated device, which can also achieve the purpose and effect of the invention.
基于同样的原理和方法,本发明可以在上述实施例中,将干选机改为两产品或多产品的分选设备,同样能达到发明目的和效果。Based on the same principle and method, the present invention can change the dry separator into a two-product or multi-product sorting device in the above embodiment, which can also achieve the purpose and effect of the invention.
如上所述,采用本发明的一种雾气干法分选方法和系统,从根源上消减了现有干选机中大量产生的干粉尘,改变了现有技术中存在的微粉尘处理难题,并消除了微粉尘存在的爆炸隐患,实现了系统简单、运行稳定、可靠性高、分选成本低、环保的雾气干法分选方法和系统,是一种目前分选行业内全新的经济高效的雾气干法分选方法和系统,特别适应于高瓦斯矿井中使用,且对块煤干法排矸系统更简单。As described above, the use of a mist dry separation method and system of the present invention reduces the dry dust generated in large quantities in the existing dry separator from the root, changes the problem of fine dust treatment existing in the prior art, and reduces the It eliminates the hidden danger of explosion of micro-dust, and realizes the mist dry separation method and system with simple system, stable operation, high reliability, low separation cost and environmental protection. It is a new economical and efficient method in the separation industry. The mist dry separation method and system are especially suitable for use in high gas mines, and the dry gangue discharge system for lump coal is simpler.
本发明公开了一种一种雾气干法分选方法和系统,以上虽然列举了较少的实施例,但对于本领域的普通技术人员,对本发明所做的某些改型、改进、替换等,或者上述实施方式作任何组合变化,均落在本发明的保护范围之内。The present invention discloses a mist dry separation method and system. Although a few examples are listed above, some modifications, improvements, replacements, etc., made to the present invention will be appreciated by those of ordinary skill in the art. , or any combination of the above-mentioned embodiments, all fall within the protection scope of the present invention.
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