TWM604323U - Wet separation equipment for treating metal-containing powder wastes - Google Patents

Abstract

This invention belongs to a wet separation equipment for treating metal-containing powder wastes. This wet separation equipment involving stabilization process can effectively treat metal-containing powder wastes into non-hazardous fine particles and very small amount of metal-containing sludge. Subsequently, the non-hazardous fine particles can be recycled to make products, and metal-containing sludge also can be recycled. This equipment has some advantages, e.g., time control, movability, easy cleaning, and instant monitoring. The target wastes are metal-containing powder wastes generated from high temperature processing units (such as metal-containing dust collected by dust collection equipment, and metal-containing bottom residue discharged by high temperature processing unit, etc.), and therefore subjected to wet separation and metal stabilization. The overall treatment equipment includes: (1) Vortex mixing tank: the metal-containing powder wastes and fresh water can be mixed in the mixing tank and become a slurry, which can be further conveyed by a reciprocated high-pressure pump and control valve. (2) Funnel-type mixing tank: this tank involves stirring motor, rotor, detector, dosing delivery pipe, etc. The mixed slurry can be further mixed with clean water and/or chemical solution in this mixing tank. (3) Dewater machine: after the wet treatment in funnel-type mixing tank, the slurry is delivered into dewater machine for solid/liquid separation. (4) Dosing and control equipment: including pumps for adding chemical stabilizer, pipelines and their control panels, stirring speed and time control panels, detector display panels, etc.

Description

Treatment equipment for wet separation of heavy metal powder waste

This creation is related to the treatment technology of heavy metal powder waste materials. More specifically, it refers to a set of wet separation and stabilization equipment that can be harmless and stabilized, and includes a real-time monitoring system to facilitate accurate operation It is a convenient and convenient wet separation processing equipment for heavy metal powder waste.

High-temperature treatment equipment is easy to produce hazardous powder wastes containing heavy metals. The previous treatment technology mostly used "solidification" for intermediate treatment, and then "burying" for final disposal. This practice is prone to cause problems such as the dissolution of harmful substances in the solidified material, causing secondary pollution of soil and groundwater, and the availability of burial sites for the solidified material is gradually insufficient.

Heavy metal-containing powder wastes cannot be directly used as raw materials or materials for reuse because they contain harmful heavy metals. Therefore, such heavy metal-containing powder wastes must be treated first, and heavy metals and other harmful substances must be removed before they can be reused.

In addition to the above-mentioned "solidification + burying", the treatment technology of heavy metal powder waste has other treatment technologies such as extraction, stabilization, sintering, and vitrification. Regarding its processing mechanism, extraction is removal, that is, removal or removal of harmful substances such as heavy metals that are not suitable for reuse; stabilization is the stabilization of easily eluted heavy metals (Including curing agent stability, chemical agent stability, etc.); sintering is the use of high temperature to partially melt the powder waste and agglomerate into agglomerates; as for vitrification, the powder waste is completely melted by means of higher sintering temperature.

This patent has both extraction and stabilization mechanisms. It is to develop a set of wet separation and stabilization equipment that can treat heavy metal powder waste, so that the harmless powder after treatment can be reused.

The purpose of this creation is to provide a wet-type separation of heavy metal powder-containing waste treatment equipment, which adopts vertical flow centrifugal separation, and is combined with "stirring + disturbance" to reduce the total amount of wet powder and the loss of blockage. Low-cost, high-throughput, high-yield and high-value recycling production equipment.

The reason is that, in order to achieve the aforementioned purpose, this creation is to provide a wet separation of heavy metal powder-containing waste processing equipment, including a vortex mixing tank for uniformly mixing heavy metal powder waste and water into a slurry; The funnel-shaped mixing tank includes a fast mixing tank and a slow mixing tank. Both the fast mixing tank and the slow mixing tank have a stirring motor and a rotor. The fast mixing tank is connected to the vortex mixing tank for mixing The mixed slurry conveyed by the vortex mixing tank is crushed and mixed at high speed and quickly, which can crush and decompose large particles of heavy metal powders to produce fine particle slurry. The slow mixing tank is connected to the fast mixing tank for mixing The waste liquid conveyed by the fast mixing tank is mixed at a low speed to maintain the output of fine-grained slurry for wet treatment; a dehydrator is connected to the fast mixing tank to solidify the slurry conveyed by the fast mixing tank /Liquid separation. The separated solids are placed in a temporary storage tank. After sampling and testing, they can be used for subsequent reuse. The waste liquid can be placed in a waste liquid temporary storage tank; one dosing and control equipment is connected The vortex mixing tank and funnel Type mixing tank and dewatering machine are used to control the operation of each of the swirl type mixing tank, funnel type mixing tank and dewatering machine.

100: Whirlpool mixing tank

1101: Fast Mixing Slot

1102: slow mixing tank

110: Funnel type mixing tank

1103: Stirring motor

1104: Rotating Blade

120: dehydration machine

130: temporary storage slot

140: Waste liquid temporary storage tank

Figure 1 is a system diagram of a preferred embodiment of the author.

Fig. 2 is a schematic diagram of the processing flow of a preferred embodiment of the present creation.

Hereinafter, a preferred embodiment of this creation will be cited, and further detailed description will be given in conjunction with the drawings as follows:

As shown in Figure 1 and Figure 2, the wet separation of heavy metal powder-containing waste processing equipment according to a preferred embodiment of the present invention includes a vortex mixing tank 100, a funnel-shaped mixing tank 110, and a dehydrator 120 With one dosing and control equipment.

The vortex mixing tank 100 is used to uniformly mix heavy metal powder waste and water into a slurry, and a pneumatic diaphragm sludge pump is provided to drive the appropriate amount of water poured into the tank to generate a vortex in advance, and then the heavy metal powder is incinerated The bulk waste is evenly sprinkled into the tank, and at the same time, the mixing auxiliary waste is used to follow the vortex direction to improve the mixing efficiency, thereby forming a heavy metal waste liquid.

The funnel-shaped mixing tank 110 includes a fast mixing tank 1101 and a slow mixing tank 1102. Both the fast mixing tank 1101 and the slow mixing tank 1102 have a stirring motor 1103 and a rotating blade 1104. The fast mixing tank 1101 is Connected to the vortex mixing tank 100 for high-speed, rapid crushing and mixing of the mixed slurry conveyed by the vortex mixing tank 100, which can crush and decompose large particles of heavy metal powders to produce fine particles of slurry. The slow mixing tank 1102 is connected to the fast mixing tank 1101 for the The waste liquid conveyed by the fast mixing tank is mixed at a low speed to maintain the output of the fine-grained material slurry for wet treatment.

In detail, a pneumatic diaphragm sludge pump and a control valve are provided to transport the heavy metal waste liquid in the vortex mixing tank 100 to the fast mixing tank 1101. When the waste liquid reaches a certain amount, the control system is activated in advance to make the mixing motor 1103 drives the rotating blade 1104. At this time, the rotating blade 1104 needs to be quickly rotated to prevent the powder waste liquid from being precipitated due to the agglomeration phenomenon. In a short time (10 minutes), the control parameter of "stirring + disturbance" is increased. After the heavy metal phase transfer of the powder in the tank is completed, the control parameter of "stirring + disturbance" is then reduced, and then the dehydrator wet separation is performed at the lower "stirring + disturbance" parameter, and the powder and heavy metal wastewater are collected separately. When the fine granular liquid in the slow mixing tank 1102 reaches a certain amount, the control system is activated in advance to make the stirring motor 1103 drive the rotating blade 1104. At this time, the rotating blade 1104 needs to be quickly rotated to make the fine granular liquid suspend in an appropriate amount of water, and then adjust Reduce the control parameters of "Stirring + Disturbance", and add a strong acid stabilizer for stabilization during a long period of time (30 minutes). Once the parameters set by the system are met, the dehydrator 120 wet separation will be fine. The pellets and heavy metal wastewater are collected separately.

The dehydrator 120 is a centrifugal dehydrator and is connected to the fast mixing tank 1101 for solid/liquid separation of the slurry conveyed by the fast mixing tank 1102. The separated solids are placed in a temporary storage tank 130 and tested by sampling It can be reused later if it meets the legal standards, and the waste liquid can be placed in a waste liquid temporary storage tank 140.

The dosing and control equipment is connected to each of the vortex mixing tank 110, funnel-shaped mixing tank 110 and dehydrator 120, including pumps, pipelines and control panels, mixing speed and time control panels for adding stable chemicals , Detector The display panel and other elements are used to control the operation of each of the vortex mixing tank 110, the funnel-shaped mixing tank 110 and the dehydrator 120.

According to the above-mentioned whole set of inventions, it is suitable to promote the recycling and decontamination equipment of different powder wastes produced by relevant incineration plants at home and abroad, and medium/large real plants can be installed according to the size of the land in the plant. The complete set of stabilization equipment for wet separation of heavy metal powder waste materials is a general medium and large fixed reaction tank.

The invention mainly immersed the waste in water, mixed and centrifuged for dehydration, then the powder was soaked in water and mixed and added with a stabilizer (>95% strong acid) to stabilize the powder and then centrifuged for dehydration, and then the heavy metal-containing waste liquid after dehydration The collection tank adopts the neutralization sedimentation method, and separates and collects the precipitated sludge and waste water produced by the dehydrator. If it meets the reuse and dechemical standard, it will be provided for use in the dechemical industry. If not, continue to improve and refine.

100: Whirlpool mixing tank

1101: Fast Mixing Slot

1102: slow mixing tank

110: Funnel-shaped mixing tank

1103: Stirring motor

1104: Rotating Blade

120: dehydration machine

130: temporary storage slot

140: Waste liquid temporary storage tank

Claims (1)

A processing equipment for wet separation of heavy metal powder waste materials, comprising: a whirlpool mixing tank for uniformly mixing heavy metal powder waste materials and water into a slurry; a funnel-shaped mixing tank, including one A fast mixing tank and a slow mixing tank. Both the fast mixing tank and the slow mixing tank have a stirring motor and a rotor. The fast mixing tank is connected to the vortex mixing tank for conveying the vortex mixing tank The mixed slurry is crushed and mixed at high speed and quickly, which can crush and decompose large particles containing heavy metal powders to produce fine-grained slurry. The slow mixing tank is connected to the fast mixing tank for conveying waste liquid from the fast mixing tank. Mixing at a low speed to maintain the output of fine-grained material slurry for wet treatment; a dehydrator connected to the fast mixing tank for solid/liquid separation of the slurry conveyed by the fast mixing tank, and the separated solid The material is placed in a temporary storage tank, after sampling and testing to meet the regulatory standards, it can be reused later, and the waste liquid can be placed in a waste liquid temporary storage tank; and a dosing and control device, connected to each of the vortex mixing tanks , Funnel-type mixing tank and dewatering machine, to control the operation of the vortex-type mixing tank, funnel-type mixing tank and dewatering machine.

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