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Quantitive slurry conveying equipment and method for conveying slurry

A conveying equipment and slurry conveying technology, applied in the directions of mixing methods, chemical instruments and methods, mixers with rotary stirring devices, etc., to achieve the effect of preventing settling

Inactive Publication Date: 2011-03-30
GRIREM ADVANCED MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But also there is no report for the equipment and delivery method that require the continuous delivery of quantitative solid ratio

Method used

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  • Quantitive slurry conveying equipment and method for conveying slurry
  • Quantitive slurry conveying equipment and method for conveying slurry
  • Quantitive slurry conveying equipment and method for conveying slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Transport calcium hydroxide-calcium hydroxide slurry: transport 30 mesh calcium hydroxide powder, and prepare calcium hydroxide slurry with a certain concentration and flow rate. The lifting height of the powder conveyed by the screw feeder is 0.01 meters, the speed of the screw feeder is controlled by a frequency converter, the powder flow rate is adjusted to 5 g / min, the water flow rate is controlled to 8 liters / min, and the theoretical slurry content is 0.06 wt%. The mixing volume is 5.4 cubic meters, the overflow pipe in the container is immersed 25cm below the liquid surface, and the diameter of the pipe outside the container is 200mm. The pump is a sewage pump with a flow rate of 1.5 cubic meters per hour. The amount of powder conveyed by the screw feeder is detected every 5 minutes within half an hour, and the slurry concentration is analyzed every 5 minutes.

[0030] Sample data:

[0031]

Embodiment 2

[0033] Conveying magnesium oxide-magnesia slurry: Conveying 500 mesh magnesium oxide powder, preparing magnesium hydroxide slurry with a certain concentration and flow rate. The lifting height of the powder conveyed by the screw feeder is 4.5 meters, the speed of the screw feeder is controlled by a frequency converter, the flow rate is adjusted to 1000 g / min, the water flow rate is controlled to 1 liter / min, and the theoretical slurry content is 50wt%. The mixing volume is 5.4 cubic meters, the overflow pipe in the container is immersed 5cm below the liquid surface, and the diameter of the pipe outside the container is 75mm. The mixing bucket has a volume of 30 liters. The pump is a mortar pump with a flow rate of 1.5 cubic meters per hour. The amount of powder conveyed by the screw feeder is detected every 5 minutes within half an hour, and the slurry concentration is analyzed every 5 minutes.

[0034] Sample data:

[0035]

Embodiment 3

[0037] Conveying calcium carbonate-calcium carbonate slurry: transport 300 mesh calcium carbonate powder, and prepare calcium carbonate slurry with a certain concentration and flow rate. The screw feeder conveys powder and feeds downward from a height of 4.5 meters. The speed of the screw feeder is controlled by a frequency converter, the flow rate is adjusted to 3700 g / min, the water flow rate is controlled to 15 liters / min, and the theoretical slurry content is 19.8 wt%. The mixing volume is 4.5 cubic meters, the overflow pipe in the container is immersed 15cm below the liquid surface, and the diameter of the pipe outside the container is 100mm. The pump is a mortar pump with a flow rate of 1.5 cubic meters per hour. The amount of powder conveyed by the screw feeder is detected every 5 minutes within half an hour, and the slurry concentration is analyzed every 5 minutes.

[0038] Sample data:

[0039]

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Abstract

The invention provides quantitive slurry conveying equipment and a method for conveying slurry. The equipment can convey the slurry with a fixed slurry concentration. The equipment comprises a slurry mixing barrel 4, a quantitive powder conveying device, a stirring device 5, a solution metering device 6 and a slurry conveying device. The method for applying the equipment to convey the slurry comprises the following steps of continuously conveying a powdery substance and a liquid medium into a slurry mixing device in a cocurrent flow mode; and utilizing a spiral feeding device to continuously and quantitively convey the powdery substance, utilizing a flowmeter to continuously and quantitively convey the liquid medium, stirring and mixing in the slurry mixing device to form suspended slurry, continuously overflowing and outputting, and conveying the suspended slurry to an application position through the slurry conveying device. The equipment and the slurry conveying method can quantitively and continuously convey the slurry, are suitable for conveying a solid substance which has larger bulk specific gravity variation and is difficult to accurately control on the output quantity by depending on simple spiral feeding equipment, can also quantitively and remotely convey the slurry and are convenient for logistics management and safety operation.

Description

technical field [0001] The invention relates to a slurry quantitative delivery device and a slurry delivery method, belonging to a new type of slurry metering equipment, which can be used in chemical industry, metallurgy, food, medicine and other industries. Background technique [0002] At present, the separation and purification of a single rare earth element in industry generally adopts solvent extraction. In the extraction process, not only is the cost increased due to the consumption of a large amount of ammonia, but also a large amount of ammonia nitrogen wastewater is produced, causing serious pollution to water resources. Due to the low concentration of ammonia nitrogen wastewater, it is difficult to recycle, and the recycling cost is high. It is difficult for enterprises to accept. How to eliminate the pollution of ammonia nitrogen wastewater to the environment is a major problem that needs to be solved urgently in the rare earth separation industry. Through conti...

Claims

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Application Information

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IPC IPC(8): B67D5/00B01F7/00B01F3/12B01F15/06B65G33/08B65G33/24
Inventor 杨桂林彭新林李明来韩业斌龙志奇
Owner GRIREM ADVANCED MATERIALS CO LTD
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