CN102229825A - Water coal slurry production process - Google Patents

Abstract

The invention relates to a water coal slurry production process. Coal briquettes is adopted as raw materials, and the production process comprises the following concrete steps of: a, weighing and screening the raw materials; b, crushing by adopting a crusher; c, stirring and blending once; d, sieving by adopting a medium drainage screen; e, concentrating by adopting a thickener; f, stirring and blending twice; and g, homogenizing. By adopting the production process provided by the invention, the technological flow is simplified, the working efficiency is improved, the energy consumption is low, the fineness and concentration of a water coal slurry finished product and quality of uniformity are guaranteed, coal particles with the particle size less than 0.8mm in the water coal slurry reach 100%, and the requirement of a user to the next process is met.

Description

A kind of coal water slurry pulping process

Technical field

The present invention relates to a kind of coal water slurry pulping process.

Background technology

The ZL200710015400.x coal mud water slurry productive technology discloses a kind of production technique of coal water slurry, the feed coal that uses in this technology is to carry out ore grinding with ball mill to handle, because the ore grinding treatment time of ball mill is long and energy consumption is bigger, cause explained hereafter efficient not high, and the flow process of whole technology is long, complicated operation.

Summary of the invention

The present invention provides the coal water slurry pulping process that a kind of technology is simple, cut down the consumption of energy, save cost in order to overcome the above problems.

Technical scheme of the present invention is: comprise the raw material coal cinder, specifically by following step processing:

A, raw material warehouse discharging mouth are joined weighing belt, and the raw material coal cinder is weighed, screened, and obtain the charging of granularity less than 50mm;

B, charging is delivered to reversible pair of counter beating hammer type disintegrator by totally-enclosed belt type conveyer carry out fragmentation, discharging-material size accounts for the 88-92% of discharging total amount less than the amount of 1mm, and the particle less than 1mm of discharging through crusher enters belt type conveyer;

C, transfer roller are transported to mixing drum with the discharging of step b gained to carry out first time proportioning and stirs, and stirs matched proportion density 50%;

D, the material of 50% concentration sent in the cleaned coal scalping screen sieve, sieve classification granularity 0.8mm, screen overflow carry with conveyor and get back to former feed bin, enter crusher in crushing once more, and the screen underflow gravity flow enters down road lamella thickener equipment;

E, thickener concentrate material, and underflow density generally can be controlled in 63-68%, and the clear water that thickener overflows flows automatically to and enters a mixing drum again behind the water reservoir and recycle;

F, the material after concentrating are transported to No. two mixing drums through spiral pump and tentatively allocate, and allotment concentration is 65-70%;

Efficient homogenize pump is established in g, No. two mixing drum bottoms, carries out homogenize and handles, and guarantees that raw meal particle size reaches 100% less than the amount of 0.8mm.

Technology of the present invention has the following advantages:

1, used feed coal difference, existing raw material be through pulverizing and coal washing after coal slime, increased technical process, increased energy consumption, feed coal of the present invention is original coal cinder, and feed coal is had no requirement, and the scope of application is wider, directly energy consumption is lower, and cost is lower, and economic benefit is higher.

2, the mode of Fen Suiing is different with equipment, uses crusher to replace ball mill, and the efficient of crusher is far above ball mill, and energy consumption is much lower.

3, total system is used enclosed recirculated water, and water utilization rate improves, the conserve water resource.

4, total system level of automation height can be accomplished unmanned.System's controllable degree height, stable and reliable product quality.

5, contrasting with under the output, production-line arrangement compact and reasonable of the present invention, floor space is little, and user's civil engineering cost is low.

The present invention has simplified technical process, has improved working efficiency, and energy consumption is low, the quality of the fineness of coal water slurry finished product, concentration and uniformity coefficient is guaranteed, and granularity reaches 100% less than the coal particle of 0.8mm in the coal water slurry, satisfies the needs that require of user's next procedure.

Description of drawings

Fig. 1 is a schema of the present invention.

Embodiment

A kind of coal water slurry pulping process comprises the raw material coal cinder, specifically by following step processing:

A, raw material warehouse discharging mouth are joined weighing belt, and the raw material coal cinder is weighed, screened, and obtain the charging of granularity less than 50mm;

B, charging is delivered to reversible pair of counter beating hammer type disintegrator by totally-enclosed belt type conveyer carry out fragmentation, the charging transfer rate is controlled automatic and adjustable by PLC, PLC is according to the accurate convey materials of the defeated amount of reaching of system requirements, suction port is established in crusher import top, external dust sucting pipeline dedusting, the electric motor of crusher drives host work by fluid-flywheel clutch, the hitting power of the tup of equipment dependence high speed rotating and the surging force between material and the counterpunch board are carried out broken material, the crusher discharging-material size accounts for the 88-92% of discharging total amount less than the amount of 1mm, and the particle less than 1mm of discharging through crusher enters belt type conveyer;

C, transfer roller are transported to mixing drum with the discharging of step b gained to carry out first time proportioning and stirs, stir matched proportion density 50%, water inlet pipe is equipped with in side, mixing drum top, inlet channel is provided with volume pump, quantitatively carries the water source to mixing drum, and the mixing drum top is provided with inventory in the liquidometer control mixing drum, mixing drum below output channel configuration flap type, the material that stirs at the uniform velocity is transported to the cleaned coal scalping screen through the slag stock pump, and transfer rate is by the frequency transformer automatic and adjustable;

D, the material of 50% concentration sent in the cleaned coal scalping screen sieve, when slag stock pump transport pipe is transported to scalping screen, be divided into four road transfer limes uniformly to the scalping screen feeding through the ore pulp mine distributor, sieve classification granularity 0.8mm, screen overflow is carried with conveyor and is got back to former feed bin, enter crusher in crushing once more, the screen underflow gravity flow enters down road lamella thickener equipment;

E, thickener concentrate material, underflow density generally can be controlled in 63-68%, the clear water that thickener overflows flows automatically to and enters a mixing drum again behind the water reservoir and recycle, the thickener underflow outlet connects spiral pump, the spiral pump exit is provided with concentration and flow detector, realizes the automatization control of material concentration and flow;

F, the material after concentrating are transported to No. two mixing drums through spiral pump and tentatively allocate, and allotment concentration is 65-70%;

Efficient homogenize pump is established in g, No. two mixing drum bottoms, carries out homogenize and handles, and guarantees that raw meal particle size reaches 100% less than the amount of 0.8mm, homogenize pump motor variable frequency control, and easy to adjust, reliable, energy consumption is lower, satisfies the needs that require of user's next procedure.

Claims (1)

1. a coal water slurry pulping process comprises the raw material coal cinder, it is characterized in that, specifically by following step processing:

A, raw material warehouse discharging mouth are joined weighing belt, and the raw material coal cinder is weighed, screened, and obtain the charging of granularity less than 50mm.

B, charging is delivered to reversible pair of counter beating hammer type disintegrator by totally-enclosed belt type conveyer carry out fragmentation, discharging-material size accounts for the 88-92% of discharging total amount less than the amount of 1mm, and the particle less than 1mm of discharging through crusher enters belt type conveyer;

C, transfer roller are transported to mixing drum with the discharging of step b gained to carry out first time proportioning and stirs, and stirs matched proportion density 50%;

D, the material of 50% concentration sent in the cleaned coal scalping screen sieve, sieve classification granularity 0.8mm, screen overflow carry with conveyor and get back to former feed bin, enter crusher in crushing once more, and the screen underflow gravity flow enters down road lamella thickener equipment;

E, thickener concentrate material, and underflow density generally can be controlled in 63-68%, and the clear water that thickener overflows flows automatically to and enters a mixing drum again behind the water reservoir and recycle;

F, the material after concentrating are transported to No. two mixing drums through spiral pump and tentatively allocate, and allotment concentration is 65-70%;

Efficient homogenize pump is established in g, No. two mixing drum bottoms, carries out homogenize and handles, and guarantees that raw meal particle size reaches 100% less than the amount of 0.8mm.

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