Rapid concentration device suitable for coal slurry element analyzer

Abstract

The utility model discloses a rapid concentration device suitable for a coal slurry element analyzer. The rapid concentration device mainly comprises a primary filter, a secondary filter, a moisture meter, a clean coal storage bin, a coal slurry blending barrel, a stirrer, a quantitative water feeder, a weighing sensor, a pneumatic switch and the like, flotation clean coal slurry with the concentration of 20%-30% can be rapidly concentrated to 60%, the concentration change interval of the concentrated coal slurry is small, and the concentrated coal slurry is fed into a coal slurry element analyzer for rapid coal quality analysis.

Description

TECHNICAL FIELD

[0001] The utility model relates to the quick concentration device of solid -liquid mixed slurry, more specifically is a kind of quick concentration device suitable for coal slurry element analyzer, and the coal slurry after concentration has higher, more stable concentration, can promote the accuracy and precision of ore slurry element detection technology. BACKGROUND

[0002] Floatation clean coal slurry ash on-line detection is an industry problem, there is no accurate detection technology. Neutron activation technology is a kind of real-time on-line element analysis technology, which has been successfully applied in cement, coal, metallurgy and other industries. Neutron activation coal quality analyzer has high accuracy in detecting ash and sulfur in coal. The concentration of floatation clean coal slurry is in the range of 20%~30%, the moisture content is high and the concentration range is large. To adapt to the neutron activation detection technology, the accuracy, precision and sample flowability of the detection results need to be considered. The coal slurry concentration needs to be concentrated to 60%. The coal slurry is in a paste state at a concentration of 50%~60%, which cannot be effectively and quickly on-line concentration detected. Therefore, the concentration feedback control method cannot be used to stabilize the concentration of the coal slurry after concentration. Therefore, the concentration of the coal slurry after concentration by the conventional concentration device changes greatly, which will cause additional detection error in element detection. SUMMARY

[0003] The utility model patent designs a kind of quick concentration device suitable for coal slurry element analyzer. The concentration device uses two-stage filtration system and a set of coal slurry concentration modulation system to quickly concentrate floatation clean coal slurry with a concentration of 20%~30% to a specified concentration. The patent uses a combination of two-stage quick filter-drying technology and concentration deployment technology to stabilize the concentration of the coal slurry after concentration.

[0004] The particle size of floatation clean coal is small, and there are a large number of reagents in the coal slurry. Centrifugal filter and vacuum filter cannot quickly filter and dry the coal slurry. At present, pressure filter is mostly used, which has a long filtration time and cannot meet the requirement of quick filtration. To achieve the purpose of quick concentration and stable coal slurry concentration, the utility model adopts the following technical solution: two-stage filtration system is used. Coal slurry with a concentration of 20%~30% is concentrated to 40%~50% by a first-stage filtration device. The coal slurry after first-stage concentration is subjected to secondary pressure filtration, which can filter the coal slurry to dry state, with a moisture content in the range of 21%~23%. The moisture content of the coal slurry after secondary pressure filtration is detected by an on-line moisture meter and recorded as M. The floatation clean coal after filtration is automatically weighed in a coal slurry deployment barrel. The moisture content of the clean coal is calculated according to M. The system automatically calculates the amount of water needed for coal slurry with a concentration of 60% and controls the quantitative water feeder to supply water quantitatively. The stirrer is started to deploy coal slurry with a concentration of 60%. The deployed coal slurry is sent to ore slurry element analyzer for quick analysis.

[0005] Beneficial effects: the beneficial effects of the utility model are that the concentration of the flotation clean coal slurry is rapidly concentrated from 20%~30% to 60%, and the concentration of the concentrated coal slurry is relatively stable, and the detection error of the coal slurry element analyzer can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0006] The utility model is further described below in combination with the drawings and implementation examples:

[0007] Figure 1 is a schematic diagram of a rapid concentration device

[0008] In the figure, 1 is a coal slurry inlet, 2 is a primary filter, 3 is a primary filter outlet, 4 is a secondary filter inlet, 5 is a secondary filter, 6 is a secondary filter outlet, 7 is a clean coal storage bin, 8 is a pneumatic switch A, 9 is a stirrer, 10 is a quantitative water feeder, 11 is a coal slurry blending barrel, 12 is a weighing sensor, 13 is a pneumatic switch B, 14 is a blending barrel support, 15 is a coal slurry transmission pipeline, 16 is a moisture meter, and 17 is a material conveying belt. DETAILED DESCRIPTION

[0009] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0010] The concentration range of the original coal slurry sample is 20%~30%, the coal slurry enters the primary filter (2) through the coal slurry inlet (1), the primary filter (2) can be a belt vacuum filter or a rotary vane filter press, the coal slurry can be rapidly concentrated, the parameters of the primary filter (2) are controlled, and the coal slurry is concentrated to 40%~50%.

[0011] The coal slurry after one concentration enters the secondary filter (5) through the primary filter outlet (3) and the secondary filter inlet (4), the secondary filter (5) is a belt vacuum filter or other rapid filter, and the parameters of the secondary filter (5) are controlled to filter the coal slurry dry.

[0012] The filtered coal sample enters the material conveying belt (17) through the secondary filter outlet (6), the moisture content of the coal sample on the conveying belt is automatically detected by the component (16) and recorded as M.

[0013] The concentration mixing system consists of a coal slurry mixing tank (11), a weighing sensor (12), a quantitative water feeder (10), and a stirrer (9). Coal samples are transported through component (17) into the clean coal storage bin of component (7). At this time, pneumatic switch A of component (8) is normally open, and the filtered coal samples continuously enter the coal slurry mixing tank of component (11). The weighing sensor of component (12) monitors the mass of the coal sample in the coal slurry mixing tank of component (11) in real time. When the mass of the coal sample reaches 50 kg, pneumatic switch A of component (8) is closed. At this time, the filtered clean coal enters the clean coal storage bin (7) for temporary storage. The weighing sensor (12) measures the mass of the coal sample in the coal slurry mixing tank (11). A kg, opening component (10) metering water dispenser, injecting mass of kg of industrial circulating water is stirred by turning on the agitator of component (9) to obtain a coal slurry with a concentration of 60%. After the preparation is completed, the pneumatic switch B of component (13) is turned on, and the coal slurry is transported to the coal slurry element analyzer through the coal slurry transmission pipeline of component (15).

[0014] After the coal slurry in the coal slurry mixing tank of component (11) is emptied, the pneumatic switch B of component (13) is closed, the quantitative water feeder of component (10) is started, 50kg of industrial circulating water is injected, and the coal slurry mixing tank of component (11) is continuously stirred for 1 minute to clean it. After cleaning, the pneumatic switch of component (13) is opened to empty the cleaning water, the pneumatic switch B of component (13) and the agitator of component (9) are closed, and the pneumatic switch A of component (8) is turned on to mix the next batch of coal slurry, so as to realize the automatic and continuous preparation of coal slurry.

Claims

1. A rapid concentration device suitable for use in a coal slurry elemental analyzer, comprising: The device mainly comprises: a primary filter (2), a secondary filter (5), a moisture meter (16), a clean coal storage bin (7), a coal slurry blending barrel (11), a weighing sensor (12), a quantitative water feeder (10), a stirrer (9), a pneumatic switch A (8), and a pneumatic switch B (13); the technology of combining a two-stage filtration system with a concentration blending system is adopted to quickly concentrate 20%-30% of the flotation clean coal slurry to 60% of the concentration.

2. A rapid concentration device suitable for coal slurry elemental analyzer according to claim 1, characterized in that, The two-stage filtration system is adopted to realize the rapid filtration and drying of the flotation clean coal slurry; the flotation clean coal slurry with a concentration of 20%-30% is filtered through the primary filter (2), and the concentration is concentrated to 40%-50%; the concentrated coal slurry is pressed into a dry state after being pressure-filtered through the secondary filter (5), and the moisture content of the coal sample after the secondary filtration is detected by the moisture meter (16) and recorded as M.

3. A rapid concentration device suitable for coal slurry elemental analyzer according to claim 1, characterized in that, The filtered clean coal is precisely matched in concentration to obtain coal slurry with a concentration of 60%; the concentration matching system is composed of a coal slurry matching barrel (11), a weighing sensor (12), a quantitative water feeder (10), and a stirrer (9); a filtered clean coal with a mass of A kg in the coal slurry matching barrel (11) is weighed, water with a mass of kg is added through the quantitative water feeder (10), and after stirring, coal slurry with a concentration of 60% is obtained.

4. A rapid concentration device suitable for coal slurry elemental analyzer according to claim 1, characterized in that, The concentration preparation system is used in cooperation with the clean coal storage bin (7), pneumatic switch A (8) and pneumatic switch B (13) to realize automatic and continuous preparation of coal slurry; the mass of the filtered clean coal in the coal slurry preparation barrel reaches a preset mass A kg, the pneumatic switch A (8) is closed, at this time, the filtered clean coal enters the clean coal storage bin (7) for temporary storage, water with a mass of kg is added through the water feeder (10) and after stirring, 60% concentration coal slurry is obtained, the pneumatic switch B (13) is opened to send the prepared coal slurry into the coal slurry element analyzer for rapid detection.

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