CN103801138B - A kind of method and apparatus of calcium silicate slag quick separating - Google Patents
A kind of method and apparatus of calcium silicate slag quick separating Download PDFInfo
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- CN103801138B CN103801138B CN201410041779.1A CN201410041779A CN103801138B CN 103801138 B CN103801138 B CN 103801138B CN 201410041779 A CN201410041779 A CN 201410041779A CN 103801138 B CN103801138 B CN 103801138B
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Abstract
The invention discloses a kind of method and apparatus of calcium silicate slag quick separating, comprise high-pressure chamber, filter and discharge system, wherein high-pressure chamber is a high-pressure sealed system, filter is arranged within this system, mainly comprise slurry storage tank and rotating mechanism, wherein on rotating mechanism, there is multiple annular filter disc in the row of string, it is made up of multiple Sector filter plate concentric arrangement, in addition, rotating mechanism and Sector filter plate are hollow and arrange, and its inside communicates with each other, slurry storage tank is arranged at the below of described rotating mechanism; Discharge system comprises reverse-blow pipe and charging conduit, and wherein charging conduit is connected with annular filter disc, and reverse-blow pipe is connected with the gas-adding pipe of high-pressure chamber, and is communicated to the annular filter disc position above charging conduit by dispensing head.After the present invention can make separation, calcium silicate slag moisture reaches 15%, and filtrate floating material content is less than 5g/L, has increased considerably the effect of Separation of Solid and Liquid.
Description
Technical field
The present invention relates to Technology of Comprehensive Utilization of Coal Ash, particularly relate to the method and apparatus extracting calcium silicate slag quick separating in alumina process from flyash.
Background technology
Flyash is the main industrial solid castoff in coal-burning power plant, in the area such as Inner Mongolia of China and North of Shanxi, due to special geology Mineralizing setting, aluminum-containing mineral and coal seam deposit simultaneously and form high alumina coal resources, in the flyash produced after its burning, alumina content is more than 40%, is a kind of bauxite alternate resources of high-quality.
At present, China's aluminous fly-ash annual emissions about 2,500 ten thousand tons, wherein about 1,180 ten thousand tons, Inner Mongolia of China, has accounted for more than 47% of China's high alumina coal resources.Make full use of aluminous fly-ash resource and carry out alumina producing, both having solved solid waste discharge problem, having avoided waste because disposing in manpower that this waste residue brings, financial resources, achieve again resource reutilization to produce, alleviate the unfavorable factor that domestic bauxite resource is in short supply, aluminium industry development is on the hazard.
The existing method extracting aluminium oxide from flyash is generally fly ash-lime stone sintering process, flyash and raw meal prepared from lime are calcined and are generated aluminium oxide self powdering clinker by the method, this grog mixes alumina leaching with alkali lye, then thick for the aluminium oxide of stripping liquid is separated with solid calcium silicate slag, realize the recovery of aluminium oxide, so how quick rate of recovery calcium silicate slag filtration directly being affected aluminium oxide.
Existing calcium silicate slag is separated and mainly adopts the method such as vacuum filter, subsider separation.Calcium silicate slag attached liquid amount is comparatively large after filtering, more than 30% to adopt vacuum filtration method; Separation tank relies on the principle of Gravity Separation to realize Separation of Solid and Liquid, when solid particle size is thinner, or when between solid-liquid, difference in specific gravity is less, calcium silicate slag sinking speed will be very slow, be difficult to realize effective Separation of Solid and Liquid, in addition, Separation of Solid and Liquid overlong time, aluminum oxide secondary will be caused to react high, and calcium silicate slag digesting efficiency of alumina is low waits series of problems.
Summary of the invention
The object of the invention is to the deficiency for general calcium silicate slag separation method, a kind of method and apparatus of calcium silicate slag quick separating is provided, by described filter is arranged in described high-pressure chamber, thus in storehouse pressure effect under, the liquid in calcium silicate slag slurries is made to enter described filtrate discharge line quickly through the mesh of filter, and formation filter cake piled up by calcium silicate slag solid on filter screen, thus calcium silicate slag slurries are made to carry out Separation of Solid and Liquid fast.In existing calcium silicate slag separation equipment and method, after being separated, the moisture of calcium silicate slag is generally greater than 30%, and filtrate floating material content is greater than 10g/L, and after the present invention can make separation, calcium silicate slag moisture reaches 15%, filtrate floating material content is less than 5g/L, has increased considerably the effect of Separation of Solid and Liquid.
The present invention is simultaneously by arranging automatic discharging system, the separation of calcium silicate slag is carried out continuously, in conjunction with the work of high-pressure chamber and filter, the separating rate of calcium silicate slag is increased substantially, the present invention is per hour processes 120 ~ 150 tons, calcium silicate slag slurries, improve more than 50% than general calcium silicate slag separating rate, have that separating rate is fast, good separating effect, and the advantage such as easy to operate.
Technical scheme of the present invention is:
A kind of calcium silicate slag quick separating equipment, comprising:
High-pressure chamber, it is an airtight hollow vessel, is provided with gas-adding pipe, and described gas-adding pipe and an air compressor are connected to form high-pressure sealed system;
Filter, it is inner that it is arranged at described high-pressure chamber, comprise slurry storage tank and rotating mechanism, wherein said rotating mechanism is connected with multiple annular filter disc, described annular filter disc is made up of multiple Sector filter plate concentric arrangement, and described annular filter disc string comes on described rotating mechanism, in addition, described rotating mechanism and described Sector filter plate are hollow and arrange, and its inside communicates with each other; Described slurry storage tank is arranged at the below of described rotating mechanism; Described filter also comprises rotational agitation bar, its first end is connected to the rotating mechanism at described annular filter disc interval and is rotated by its drive, its second end is provided with the stripe board perpendicular to described rotational agitation bar, this stripe board and described rotating mechanism are arranged at a certain angle, and its length is less than the spacing distance of adjacent two annular filter discs;
Discharge system, it comprises reverse-blow pipe and charging conduit, wherein said charging conduit is connected with described annular filter disc, and described reverse-blow pipe is connected with the gas-adding pipe of described high-pressure chamber, and is communicated to the described annular filter disc position above described charging conduit by dispensing head.
Preferably, in described calcium silicate slag quick separating equipment, described reverse-blow pipe is provided with multiple blowback air port by dispensing head, comprises an end blowing mouth and blowing mouth, and wherein said end blowing mouth is arranged at the two ends place of the described annular filter disc of string row and blows to direction in opposite directions; Described blowing mouth is arranged at described annular filter disc interval and blows round about, and the blowing direction in described blowback air port is vertical with described annular filter disc.
Preferably, in described calcium silicate slag quick separating equipment, described discharge system also comprises air-dry machine, pneumatic operated valve and proximity switch, wherein said air-dry machine is arranged at the top of slurry storage tank in described high-pressure chamber, in addition, described reverse-blow pipe is connected with described pneumatic operated valve and is controlled to blow by it, and described pneumatic operated valve is connected with described proximity switch and links with it.
Preferably, in described calcium silicate slag quick separating equipment, described Sector filter plate surface is arranged with filter screen removably, and described filter screen and Sector filter plate surface all have mesh, and the mesh aperture of described filter screen is 5 ~ 15 microns.
Preferably, in described calcium silicate slag quick separating equipment, described filter is also provided with feeding pipe, and the first end of described feeding pipe connects described slurry storage tank, and its second end is arranged at described high-pressure chamber outside and is connected with a feed pump; Described filter also comprises filtrate line, described go out the first end of filtrate line be connected to one end of described rotating mechanism and be communicated with its internal cavities, its second end is arranged at described high-pressure chamber outside and is connected with a steam-water separator, and by described steam-water separator, filtering clarifying liquid is discharged, described in go out filtrate line the second end be provided with multiple port.
Preferably, in described calcium silicate slag quick separating equipment, described steam-water separator is the housing of a hollow, and described case top is provided with exhaust outlet, and bottom is provided with leakage fluid dram, its side is provided with feed pipe, described feed pipe and described case side face down and are obliquely installed, and its angle is 35 ± 5 degree, and its lateral length stretching into housing parts is at least 1/2 of case width, the junction of described feed pipe and housing is no more than 1/2 of described body height, and the quantity of described feed pipe is multiple; In addition, described enclosure interior is provided with the baffle plate of multiple cross arrangement, and described baffle plate and described case side face down and be obliquely installed, and its lateral length is at least 1/2 of described case width.
Preferably, in described calcium silicate slag quick separating equipment, the charging conduit of described discharge system comprises horizontal discharge zone and vertical discharge zone, wherein said horizontal discharge zone inside is provided with drag conveyor, described vertical discharge zone comprises discharge valve, upper flashboard, switching chamber, lower flashboard from top to bottom in turn, wherein said upper flashboard and lower flashboard are all connected with Hydraulic Station and are driven by it, and are connected with computer and control to link by it; In addition, be connected with feed belt below described lower flashboard unloading materials is exported.
Preferably, described calcium silicate slag fast separating process comprises the following steps:
Step one, open described air compressor, make gas pressure in described high-pressure chamber reach certain threshold values;
Step 2, start described feed pump, calcium silicate slag slurries are injected described slurry storage tank, thus makes described annular filter disc immerse in described calcium silicate slag slurries;
Step 3, start described filter, at described Sector filter plate through described slurry storage tank, due to the pressure reduction existed outside described high-pressure chamber and storehouse, calcium silicate slag solid in described calcium silicate slag slurries is piled up in described screen surface attachment, liquid goes out filtrate line described in then being entered by described Sector filter plate and the internal cavities of described rotating mechanism that is communicated with it, is discharged by described gas-liquid separator;
Step 4, the described Sector filter plate being attached with calcium silicate slag solid are driven by described rotating mechanism and continue to rotate, and carry out drying in rotation process after it leaves described slurry storage tank, dry cake is formed when arriving above described charging conduit, being blown by described reverse-blow pipe makes described dry cake fall into described charging conduit, thus discharged by described discharge system, complete the calcium silicate slag quick separating of described calcium silicate slag slurries.
Preferably, in described calcium silicate slag fast separating process, the rotating speed of described rotating mechanism is 0.4 ~ 1.5 rev/min; When in calcium silicate slag slurries, solids content is 200 ~ 260g/L, in described high-pressure chamber, gas pressure is set to 0.15 ~ 0.5MPa; When in calcium silicate slag slurries, solids content is 260 ~ 360g/L, in described high-pressure chamber, gas pressure is set to 0.18 ~ 0.5MPa.
The present invention has following beneficial effect: the method and apparatus of calcium silicate slag quick separating of the present invention, by described filter is arranged in described high-pressure chamber, to make under the effect of the pressure in storehouse of the liquid in calcium silicate slag slurries quickly through filter and discharged by described filtrate discharge line, and formation filter cake piled up by calcium silicate slag solid on filter screen, thus calcium silicate slag solid is made to obtain quick separating.After being separated, calcium silicate slag moisture can reach 15%, and the moisture that conventional method is separated rear calcium silicate slag is generally greater than 30%, be separated in addition and obtain filtrate floating material content and be less than 5g/L, and general separation method filtrate floating material content is greater than 10g/L, the present invention has increased considerably the effect of calcium silicate slag slurries Separation of Solid and Liquid.
The present invention is simultaneously by arranging automatic discharging system, the separation of calcium silicate slag is carried out continuously, in conjunction with the work of high-pressure chamber and filter, the separating rate of calcium silicate slag is increased substantially, the present invention is per hour processes 120 ~ 150 tons, calcium silicate slag slurries, improve more than 50% than general calcium silicate slag separating rate, have that separating rate is fast, good separating effect, and the advantage such as easy to operate.
Accompanying drawing explanation
Fig. 1 is the cross-sectional of calcium silicate slag quick separating equipment of the present invention;
Fig. 2 is the vertical section schematic diagram of calcium silicate slag quick separating equipment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is elaborated, can implement according to this after consulting this description to make those of ordinary skill in the art.
As shown in Figure 1, calcium silicate slag quick separating equipment of the present invention comprises: high-pressure chamber 1, and it is an airtight hollow vessel, is provided with gas-adding pipe, and described gas-adding pipe and an air compressor are connected to form high-pressure sealed system; Filter, it is inner that it is arranged at described high-pressure chamber, comprise slurry storage tank 4 and rotating mechanism 3, wherein said rotating mechanism 3 is connected with multiple annular filter disc 11, described annular filter disc 11 is made up of multiple Sector filter plate 2 concentric arrangement, and described annular filter disc 11 string comes on described rotating mechanism 3, in addition, described rotating mechanism 3 and described Sector filter plate 2 are hollow and arrange, and its inside communicates with each other; Described slurry storage tank 4 is arranged at the below of described rotating mechanism 3; Described filter also comprises rotational agitation bar, its first end is connected to the rotating mechanism 3 at described annular filter disc 11 interval and is rotated by its drive, its second end is provided with the stripe board perpendicular to described rotational agitation bar, this stripe board and described rotating mechanism 3 are arranged at a certain angle, and its length is less than the spacing distance of adjacent two annular filter discs 11.General filter, solid in slurries to be filtered has certain deposition, and accumulation is formed in described slurry storage tank 4, need to clear up termly, not only affect filter effect, and take time and effort, rotational agitation bar of the present invention stirs the calcium silicate slag slurries in described slurry storage tank 4 in rotary course, make it form eddy-currents, effectively can avoid the deposition of solid in it.
Discharge system, it comprises reverse-blow pipe and charging conduit 6, wherein said charging conduit 6 is connected with described annular filter disc 11, and described reverse-blow pipe is connected with the gas-adding pipe of described high-pressure chamber 1, and is communicated to described annular filter disc 11 position above described charging conduit 6 by dispensing head.
In described calcium silicate slag quick separating equipment, described reverse-blow pipe is provided with multiple blowback air port by dispensing head, comprise an end blowing mouth 12 and blowing mouth 13, wherein said end blowing mouth 12 is arranged at the two ends place of the described annular filter disc 11 of string row and blows to direction in opposite directions; Described blowing mouth 13 is arranged at described annular filter disc 11 interval and blows round about, and the blowing direction in described blowback air port is vertical to described annular filter disc 11.When the described Sector filter plate 2 being attached with filter cake rotates to position corresponding to described blowback air port, described blowback air port starts automatically to described Sector filter plate 2 inject high pressure air-flow, thus makes the filter screen moment bulging on it, is shaken off by the filter cake that it adheres to.General blowback air port is arranged on the two ends place of described annular filter disc 11, so often make the air quantity of arrival medium position less due to the obstruct of Sector filter plate described in other 2, on it, filter cake not easily comes off completely, the present invention is by increasing multiple blowing mouths 13 at the interval of described annular filter disc 11, each position is made all to obtain comparatively Wind Volume, thus filter cake is come off completely, make filter screen obtain quick and complete cleaning.
In described calcium silicate slag quick separating equipment, described discharge system also comprises air-dry machine, pneumatic operated valve and proximity switch, wherein said air-dry machine is arranged at the top of slurry storage tank 4 in described high-pressure chamber 1, in addition, described reverse-blow pipe is connected with described pneumatic operated valve and is controlled to blow by it, and described pneumatic operated valve is connected with described proximity switch and links with it.Described annular filter disc rotates, on it, described Sector filter plate 2 sequentially passes through described slurry storage tank 4, drying is carried out by air-dry machine in position on described slurry storage tank 4, attachment on it is obtained air-dry, form dry filter cake, when the described Sector filter plate 2 carrying dry cake is rotated further, automatically responded to by proximity switch to certain position place and automatically start pneumatic operated valve and carry out back-blowing, make filter cake self falling on it, ready for again entering slurry storage tank 4, so move in circles, carry out being continuously separated work to described calcium silicate slag.
In described calcium silicate slag quick separating equipment, described Sector filter plate 2 surface is arranged with filter screen removably, and described filter screen and Sector filter plate 2 surface all have mesh, and the mesh aperture of described filter screen is 5 ~ 15 microns.The material of general filter screen used is woven fabric, also can with other alkali resistance fiber fabrics, as glass fibre, synthetic fibers etc.
In described calcium silicate slag quick separating equipment, described filter is also provided with feeding pipe 5, and the first end of described feeding pipe 5 connects described slurry storage tank 4, and its second end is arranged at described high-pressure chamber 1 outside and is connected with a feed pump; Described filter also comprises filtrate line, described go out the first end of filtrate line be connected to one end of described rotating mechanism 3 and be communicated with its internal cavities, its second end is arranged at described high-pressure chamber 1 outside and is connected with a steam-water separator 14, and by described steam-water separator 14, filtering clarifying liquid is discharged, described in go out filtrate line the second end be provided with multiple port.
In described calcium silicate slag quick separating equipment, described steam-water separator 14 is the housing of a hollow, described case top is provided with exhaust outlet, bottom is provided with leakage fluid dram, and its side is provided with feed pipe, and described feed pipe and described case side face down and be obliquely installed, its angle is 35 ± 5 degree, its lateral length stretching into housing parts is at least 1/2 of case width, and the junction of described feed pipe and housing is no more than 1/2 of described body height, and the quantity of described feed pipe is multiple; In addition, described enclosure interior is provided with the baffle plate of multiple cross arrangement, and described baffle plate and described case side face down and be obliquely installed, and its lateral length is at least 1/2 of described case width.When filtrate is discharged in described high-pressure chamber, wherein include a large amount of gas, if directly discharged, to very strong jet power be caused, and cause certain potential safety hazard, the present invention by by described go out filtrate line be connected to described steam-water separator 14, filtrate is intercepted by baffle plate after its feed pipe enters, fall to described leakage fluid dram, gas wherein is then upwards discharged from described exhaust outlet, realizes the gas-liquid separation of filtrate.
In described calcium silicate slag quick separating equipment, the charging conduit 6 of described discharge system comprises horizontal discharge zone and vertical discharge zone, wherein said horizontal discharge zone inside is provided with drag conveyor, described horizontal discharge zone is connected with an operating platform in addition, this operating platform is offering the fluting that it can be made to pass through with corresponding position, described annular filter disc 11 position, described fluting interval is provided with downward-sloping groove, this groove is communicated with described horizontal discharge zone, make filter cake can enter this groove after described filter screen comes off, and due to it, there is necessarily downward-sloping angle, enable the landing downwards enter described horizontal discharge zone voluntarily of the filter cake that comes off, described vertical discharge zone is delivered to again by described drag conveyor.Described vertical discharge zone comprises discharge valve, upper flashboard 8, switching chamber 10, lower flashboard 9 from top to bottom in turn, and wherein said upper flashboard 8 and lower flashboard 9 are all connected with Hydraulic Station 7 and are driven by it, and are connected with computer and control to link by it; In addition, be connected with feed belt below described lower flashboard 9 unloading materials is exported.When filter cake is from after described Sector filter plate 2 comes off, first fall into the horizontal discharge zone of described charging conduit 6, when after a certain amount of filter cake of accumulation, push to described vertical discharge zone by described drag conveyor, and starting the discharge systems such as described discharge valve voluntarily, this discharge process is completed automatically by conputer controlled.By arranging upper flashboard 8, switching chamber 10 and lower flashboard 9, described high-pressure chamber 1 internal gas pressure can be made to keep stable.
Described calcium silicate slag fast separating process comprises the following steps:
Step one, open described air compressor, make gas pressure in described high-pressure chamber 1 reach certain threshold values;
Step 2, start described feed pump, calcium silicate slag slurries are injected described slurry storage tank 4, thus makes described annular filter disc 11 immerse in described calcium silicate slag slurries;
Step 3, start described filter, described Sector filter plate 2 through described slurry storage tank 4 time, due to the pressure reduction existed outside described high-pressure chamber 1 and storehouse, calcium silicate slag solid in described calcium silicate slag slurries is piled up in described screen surface attachment, liquid goes out filtrate line described in then being entered by described Sector filter plate 2 and the internal cavities of described rotating mechanism 3 that is communicated with it, is discharged by described gas-liquid separator;
Step 4, the described Sector filter plate 2 being attached with calcium silicate slag solid are driven by described rotating mechanism and continue to rotate, and carry out drying in rotation process after it leaves described slurry storage tank 4, dry cake is formed when arriving above described charging conduit 6, being blown by described reverse-blow pipe makes described dry cake fall into described charging conduit 6, thus discharged by described discharge system, complete the calcium silicate slag quick separating of described calcium silicate slag slurries.
In described calcium silicate slag fast separating process, the rotating speed of described rotating mechanism 3 is 0.4 ~ 1.5 rev/min; When in calcium silicate slag slurries, solids content is 200 ~ 260g/L, in described high-pressure chamber 1, gas pressure is set to 0.15 ~ 0.5MPa; When in calcium silicate slag slurries, solids content is 260 ~ 360g/L, in described high-pressure chamber 1, gas pressure is set to 0.18 ~ 0.5MPa.
Although embodiment of the present invention are open as above, but it is not restricted to listed in description and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (8)
1. a calcium silicate slag quick separating equipment, is characterized in that, comprising:
High-pressure chamber, it is an airtight hollow vessel, is provided with gas-adding pipe, and described gas-adding pipe and an air compressor are connected to form high-pressure sealed system;
Filter, it is inner that it is arranged at described high-pressure chamber, comprise slurry storage tank and rotating mechanism, wherein said rotating mechanism is connected with multiple annular filter disc, described annular filter disc is made up of multiple Sector filter plate concentric arrangement, and described annular filter disc string comes on described rotating mechanism, in addition, described rotating mechanism and described Sector filter plate are hollow and arrange, and its inside communicates with each other; Described slurry storage tank is arranged at the below of described rotating mechanism; Described filter also comprises rotational agitation bar, its first end is connected to the rotating mechanism at described annular filter disc interval and is rotated by its drive, its second end is provided with the stripe board perpendicular to described rotational agitation bar, this stripe board and described rotating mechanism are arranged at a certain angle, and its length is less than the spacing distance of adjacent two annular filter discs;
Discharge system, it comprises reverse-blow pipe and charging conduit, wherein said charging conduit is connected with described annular filter disc, and described reverse-blow pipe is connected with the gas-adding pipe of described high-pressure chamber, and is communicated to the described annular filter disc position above described charging conduit by dispensing head;
The charging conduit of described discharge system comprises horizontal discharge zone and vertical discharge zone, wherein said horizontal discharge zone inside is provided with drag conveyor, described horizontal discharge zone is connected with an operating platform in addition, this operating platform is offering the fluting that it can be made to pass through with corresponding position, described annular filter disc position, described fluting interval is provided with downward-sloping groove, and this groove is communicated with described horizontal discharge zone.
2. calcium silicate slag quick separating equipment as claimed in claim 1, it is characterized in that, described reverse-blow pipe is provided with multiple blowback air port by dispensing head, comprise an end blowing mouth and blowing mouth, wherein said end blowing mouth is arranged at the two ends place of the described annular filter disc of string row and blows to direction in opposite directions; Described blowing mouth is arranged at described annular filter disc interval and blows round about, and the blowing direction in described blowback air port is vertical with described annular filter disc.
3. calcium silicate slag quick separating equipment as claimed in claim 2, it is characterized in that, described discharge system also comprises air-dry machine, pneumatic operated valve and proximity switch, wherein said air-dry machine is arranged at the top of slurry storage tank in described high-pressure chamber, in addition, described reverse-blow pipe is connected with described pneumatic operated valve and is controlled to blow by it, and described pneumatic operated valve is connected with described proximity switch and links with it.
4. calcium silicate slag quick separating equipment as claimed in claim 1 or 2, it is characterized in that, described Sector filter plate surface is arranged with filter screen removably, and described filter screen and Sector filter plate surface all have mesh, and the mesh aperture of described filter screen is 5 ~ 15 microns;
Described filter is also provided with feeding pipe, and the first end of described feeding pipe connects described slurry storage tank, and its second end is arranged at described high-pressure chamber outside and is connected with a feed pump;
Described filter also comprises filtrate line, described go out the first end of filtrate line be connected to one end of described rotating mechanism and be communicated with its internal cavities, its second end is arranged at described high-pressure chamber outside and is connected with a steam-water separator, and by described steam-water separator, filtering clarifying liquid is discharged, described in go out filtrate line the second end be provided with multiple port.
5. calcium silicate slag quick separating equipment as claimed in claim 4, it is characterized in that, described steam-water separator is the housing of a hollow, described case top is provided with exhaust outlet, bottom is provided with leakage fluid dram, its side is provided with feed pipe, described feed pipe and described case side face down and are obliquely installed, its angle is 40 ± 5 degree, its lateral length stretching into housing parts is at least 1/2 of case width, the junction of described feed pipe and housing is no more than 1/2 of described body height, the quantity of described feed pipe with described go out the second terminal number amount of filtrate line corresponding; In addition, described enclosure interior is provided with the baffle plate of multiple cross arrangement, and described baffle plate and described case side face down and be obliquely installed, and its lateral length is at least 1/2 of described case width.
6. the calcium silicate slag quick separating equipment as described in claim 1,2 or 3, it is characterized in that, the charging conduit of described discharge system comprises horizontal discharge zone and vertical discharge zone, wherein said horizontal discharge zone inside is provided with drag conveyor, described vertical discharge zone comprises discharge valve, upper flashboard, switching chamber, lower flashboard from top to bottom in turn, wherein said upper flashboard and lower flashboard are all connected with Hydraulic Station and are driven by it, and are connected with computer and control to link by it; In addition, be connected with feed belt below described lower flashboard unloading materials is exported.
7. utilize a method for calcium silicate slag quick separating device separates calcium silicate slag as claimed in claim 4, comprising following steps:
Step one, open described air compressor, make gas pressure in described high-pressure chamber reach certain threshold values;
Step 2, start described feed pump, calcium silicate slag slurries are injected described slurry storage tank, thus makes described annular filter disc part immerse in described calcium silicate slag slurries;
Step 3, start described filter, at described Sector filter plate through described slurry storage tank, due to the pressure reduction existed outside described high-pressure chamber and storehouse, calcium silicate slag solid in described calcium silicate slag slurries is piled up in described screen surface attachment, liquid goes out filtrate line described in then being entered by described Sector filter plate and the internal cavities of described rotating mechanism that is communicated with it, and is discharged by described steam-water separator;
Step 4, the described Sector filter plate being attached with calcium silicate slag solid are driven by described rotating mechanism and continue to rotate, and carry out drying in rotation process after it leaves described slurry storage tank, dry cake is formed when arriving above described charging conduit, being blown by described reverse-blow pipe makes described dry cake fall into described charging conduit, thus discharged by described discharge system, complete the calcium silicate slag quick separating of described calcium silicate slag slurries.
8. utilize the method for calcium silicate slag quick separating device separates calcium silicate slag as claimed in claim 4, it is characterized in that, the rotating speed of described rotating mechanism is 0.4 ~ 1.5 rev/min; When in calcium silicate slag slurries, solids content is 200 ~ 260g/L, in described high-pressure chamber, gas pressure is set to 0.15 ~ 0.5MPa; When in calcium silicate slag slurries, solids content is 260 ~ 360g/L, in described high-pressure chamber, gas pressure is set to 0.18 ~ 0.5MPa.
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| CN103801138A (en) | 2014-05-21 |
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