Slurry water flocculation treatment mixer and its application

A coal slime water and mixer technology, applied in the field of water treatment, can solve the problems of high disturbance intensity, low mechanical strength, prolong disturbance time, etc., and achieve the effect of wide popularization and application prospect, improving flocculation effect, and perfecting technological process.

Active Publication Date: 2007-09-19
SHANXI COKING COAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disturbance intensity of the stirring is high, and the turbulent degree of the water increases, which is beneficial to the uniform dispersion of the agent and the mutual contact with the solid particles, but at the same time, the shear velocity is increased, which breaks the molecular chain of the flocculant and reduces the chain length, resulting in a weakened bridging
Prolo

Method used

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  • Slurry water flocculation treatment mixer and its application
  • Slurry water flocculation treatment mixer and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] As shown in Figure 1, the mixer of the present invention includes a housing 1, which has a first-stage impeller 2 and a second-stage impeller 3, and the impellers 2 and 3 are driven by a motor 4; one side of the housing is provided with a coal slime water inlet 5 and flocculant dosing port 6, the other side of the shell is provided with a slime water outlet 7, the primary impeller 2 is close to the coal slime water inlet 5, the second impeller 3 is close to the coal slime water outlet 7, and the flocculant dosing port 6 passes through The pipeline is connected between the first-stage impeller 2 and the second-stage impeller 3 . The coal slime water inlet 5 is near the lower end of the mixer, and the coal slime water outlet 7 is near the upper end of the mixer.

Embodiment 2

[0019] As shown in Figure 2, on the basis of embodiment 1, the present invention is provided with a pipeline 8 to link to each other with the coal slime water inlet place at the flocculant dosage opening place, is provided with a valve 9 on the pipeline, can regulate to enter coal slime water inlet like this the amount of flocculant. At the same time, according to the different properties of the slime water, it is convenient to change the dosing ratio of the flocculant and the partial mixing of the slime water. Embodiment 3 Determination of fractional administration and ratio thereof

Embodiment 3

[0019] As shown in Figure 2, on the basis of embodiment 1, the present invention is provided with a pipeline 8 to link to each other with the coal slime water inlet place at the flocculant dosage opening place, is provided with a valve 9 on the pipeline, can regulate to enter coal slime water inlet like this the amount of flocculant. At the same time, according to the different properties of the slime water, it is convenient to change the dosing ratio of the flocculant and the partial mixing of the slime water. Embodiment 3 Determination of fractional administration and ratio thereof

[0020] In this example, the design flow rate of the mixer is 1500m 3 / h, the impeller speed is controlled at 85rpm, the mixing time is 10s, and the power of the motor is 2.2KW. The flocculant is NPAM-7080 (Taiyuan Haichao Water Technology Co., Ltd.), dosage: 1mL (83.3g / t. coal); ss means initial slime water concentration (g / L); The first dosage refers to the amount of flocculant that enters t...

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Abstract

The present invention provides a mixer used for the slime water flocculation treatment process of coal preparation plant. The mixer of the present invention comprises a shell; wherein a first level impeller and a second level impeller which are driven by a motor are arranged inside of the shell; one side of the shell is provided with a slime water inlet and a flocculant feeding port, and the other side of the shell is provided with a slime water outlet; the first level impeller is adjacent to the slime water inlet, and the second level impeller is adjacent to the slime water outlet; the flocculant feeding port is connected between the first level impeller and the second level impeller through pipeline; the flocculant feeding port is provided with a pipeline which is connected to the slime water inlet and is provided with a valve. The mixed of the present invention is capable of improving the flocculation effect, obviously improving the water output effect of the concentrator, perfecting the slime water flocculation treatment process of coal preparation plant, setting nicer base for the coal washing with clear water and the closed circuit of wash water of coal preparation plant, and having a wide popularization and application prospect.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a mixing device used in the coal slime water flocculation treatment process in a coal preparation plant. Background technique [0002] Coal slime water is industrial wastewater produced during the coal preparation process, which contains a large number of coal particles and muddy particles, and also contains copper, iron, lead, zinc, cadmium, arsenic and other components. In order to reduce environmental pollution and make full use of For water resources, coal slime water must be effectively treated to achieve a closed-circuit cycle of clean water washing coal and washing water to meet process requirements and improve separation efficiency. [0003] Generally, the slime water in the coal preparation plant is directly discharged into the thickener or the slime sedimentation tank for sedimentation treatment, and the clarified water is recycled. Since the fine slime particl...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56
Inventor 王世民马向勤赵选选田林伶
Owner SHANXI COKING COAL GROUP
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