CN111992281A

CN111992281A - Cement clinker powder making process

Info

Publication number: CN111992281A
Application number: CN202010871858.0A
Authority: CN
Inventors: 郭金生; 王林
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-11-27

Abstract

The invention provides a cement clinker powder-making process, which is completed by matching an outer frame, two reciprocating grinding units, two grinding units, an inlet, a feeding frame and a vibration and dispersion unit.

Description

Cement clinker powder making process

Technical Field

The invention relates to the technical field of cement clinker powder making, in particular to a cement clinker powder making process.

Background

The cement clinker is prepared with limestone, clay and iron material as main material and through mixing in proper proportion to form raw material, burning to melt partially or completely and cooling to obtain semi-finished product. In the cement industry, the most commonly used portland cement clinker has the major chemical components calcium oxide, silica and minor amounts of alumina and iron oxide. The main minerals are tricalcium silicate, dicalcium silicate, tricalcium aluminate and tetracalcium aluminoferrite. The Portland cement clinker is ground together with a proper amount of gypsum to obtain the Portland cement.

The grinding process is required in the process of pulverizing cement clinker, and the traditional grinding process usually uses a machine to directly grind small pieces of raw materials into powdered cement clinker, but the grinding process has some problems:

because the volume of fritter raw materials is not of uniform size, during direct grinding, the raw materials of great volume also can cause the damage that is difficult to recover to grinding equipment when grinding the raw materials, and direct grinding is difficult to carry the fritter raw materials homogenization grinding, has the granule of great volume after the grinding often, and the powder granule after the grinding can appear the phenomenon of caking often in extrusion grinding process.

Disclosure of Invention

In order to solve the problems, the invention provides a cement clinker powder-making process, which can solve the problems that in the grinding process, because the small raw materials have different volumes, when the raw materials are directly ground, the large raw materials can cause damage which is difficult to recover to grinding equipment while the raw materials are ground, the small raw materials in conveying are difficult to uniformly grind by direct grinding, large-volume particles often exist after grinding, and the ground powdery particles often have the phenomenon of agglomeration in the extrusion grinding process.

In order to achieve the purpose, the invention adopts the following technical scheme that a cement clinker pulverizing process uses a crushing and grinding device, the crushing and grinding device comprises an outer frame, two reciprocating grinding units, two crushing units, an inlet, a feeding frame and a vibration and dispersion unit, and the cement clinker pulverizing process by adopting the crushing and grinding device comprises the following steps:

s1, crushing: crushing the large raw material into small raw materials, and drying the small raw materials;

s2, conveying: conveying the dried small raw materials to an inlet through a bucket elevator, and assisting the small raw materials to be conveyed downwards through two limiting blocks which are lifted reversely;

s3, crushing: under the action of extrusion, crushing mechanisms arranged on the left and right sides carry out secondary crushing treatment on small raw materials, and then, the impact mechanisms carry out strong impact crushing on the small raw materials subjected to secondary crushing so as to form small-particle raw materials;

s4, grinding: the grinding block arranged on the left and right sides grinds the small-particle raw materials to form powdery particles, the vibration type conveying of the vibration scattering unit conveys the powdery particles, and the powdery particles are scattered by vibration while being conveyed to form cement clinker.

Two reciprocating grinding units are installed at the left end and the right end of the outer frame, a crushing unit is arranged at the upper end of each reciprocating grinding unit, an inlet is installed in the middle of the upper end of the outer frame, a feeding frame is installed at the lower end of the outer frame, and a scattering unit is installed on the feeding frame.

Reciprocal grinding unit include the carriage, two racks, incomplete gear, the work motor, connecting rod and abrasive brick, be sliding fit connection between carriage and the frame, two racks are installed to the left and right sides inner wall of carriage, be the engaged state between rack and the incomplete gear, incomplete gear is connected with the output shaft of work motor, the work motor is installed at the frame inner wall, the inner of carriage passes through the connecting rod and is connected with the abrasive brick, concrete during operation, drive incomplete gear rotation through the work motor, drive carriage reciprocating motion from top to bottom under the cooperation of rack and pinion, drive two reverse elevating movement of abrasive brick through two reciprocal grinding units, thereby carry out abrasive treatment to the tiny particle raw materials of whereabouts.

The crushing unit comprises a fixed rod, a limiting block, a pressing mechanism, an extrusion block, a fixed plate, a sealing plate, a flexible plate, a crushing mechanism and an impact mechanism, wherein the limiting block is connected with the upper end of the lifting frame through the fixed rod, the extrusion block is installed on the inner wall of the fixed rod, the pressing mechanism is installed on the limiting block, the limiting block is connected with the upper end of the sealing plate, the lower end of the sealing plate is connected with the upper end of the fixed plate in a sliding fit manner, the fixed plate is installed on the outer frame, the lower end of the fixed plate is connected with the upper end of the flexible plate in a sliding fit manner, the lower end of the flexible plate is connected with the crushing mechanism arranged at the uppermost side, the sealing plate and the flexible plate are arranged to play a role of a limiting baffle plate, the sealing plate is connected with the fixed plate in a telescopic manner, the limiting block can normally lift, during specific work, the lifting frame in a lifting state drives the fixed rod and the limiting blocks to move up and down, the left limiting block and the right limiting block which are arranged have the effect of limiting baffle plates on falling small raw materials, the small raw materials are conveyed downwards in a matched mode of the pressing mechanism, and the small raw materials are crushed and impacted through the crushing mechanism and the impacting mechanism.

The vibration scattering unit comprises a conveying frame, a jacking frame, a cam, a connecting motor and a dispersing rod, wherein the conveying frame is connected with a feeding frame in a sliding fit manner, the jacking frame is installed at the lower end of the conveying frame, sliding grooves are uniformly formed in the conveying frame and are connected with the dispersing rod in a sliding fit manner, the dispersing rod is installed on the feeding frame, the connecting motor is installed on the feeding frame, and the cam is installed on an output shaft connected with the motor. So that the cement clinker is formed into cement clinker with clear particles.

The grinding block comprises a grinding block body, a fine grinding sand layer and a left and right incomplete gear convex teeth, wherein a grinding layer is laid on the inner end face of the upper half part of the grinding block body, a protruding block is arranged on the inner end of the lower half part of the grinding block body, the fine grinding sand layer is laid on the inner end face of the protruding block, and the left and right incomplete gear convex teeth are arranged in opposite positions.

The pressing mechanism comprises an angle plate, an internal spring and a protective sleeve, a rotating groove is formed in the limiting block, the rotating groove is connected with the upper end of the angle plate through a pin shaft, the internal spring is connected between the middle of the angle plate and the rotating groove, and the protective sleeve is sleeved outside the internal spring.

The inner end face of the extrusion block is of a wavy structure, and the limiting block is of a structure which gradually inclines inwards from top to bottom.

The crushing mechanism comprises a displacement block, a positioning rod, a crushing cone, a pressure receiving block and a reset spring, wherein the positioning rod is installed on the outer frame, the positioning rod and the displacement block are connected in a sliding fit mode, the reset spring is connected between the positioning rod and the displacement block, the pressure receiving block is installed at the outer end of the displacement block, and the crushing cone is installed at the inner end of the displacement block.

The outer end face of the compression block is of an arc-shaped face structure, and the outer end face of the compression block is attached to the inner end face of the extrusion block.

The impact mechanism comprises an impact block, a built-in rod, a connecting spring, a pressure receiving rod, a baffle plate and sealing cloth, the built-in rod is installed on the outer frame, the built-in rod is connected with the impact block in a sliding fit mode, the connecting spring is connected between the built-in rod and the impact block, the baffle plate is installed on the outer frame and located below the impact block, and the sealing cloth is connected between the baffle plate and the grinding block.

The outer end face of the pressure receiving rod is of an arc-shaped face structure, and the outer end face of the pressure receiving rod is attached to the inner end face of the extrusion block.

Wherein, the upper end of the dispersion rod is in a comb-tooth-shaped tip structure.

The invention has the beneficial effects that:

the invention provides a cement clinker pulverizing process, which adopts a structural linkage design concept to crush, impact and grind conveyed small raw materials, so that the volume of the raw materials is further reduced before grinding, the uniform grinding is improved, meanwhile, the damage of the raw materials with larger volume to mechanical equipment is avoided, and a conveying frame is driven to vibrate circularly by a cam motion principle, so that agglomerated particles are vibrated and scattered;

secondly, according to the cement clinker pulverizing process provided by the invention, the two limiting blocks arranged on the left and right sides have the effect of limiting the baffle plate on the falling small raw materials, the small raw materials are assisted to be conveyed downwards under the coordination of the pressing mechanism, and the falling small raw materials are continuously crushed and impacted by the crushing cone and the impact block, so that the size of the falling small raw materials is further reduced and uniform, and the smoothness of later grinding is ensured;

and thirdly, the reciprocating grinding unit provided by the invention carries out two-stage grinding on the crushed and impacted raw materials in a two-stage grinding mode, the multi-stage grinding is favorable for homogenizing and reducing the volume of the raw materials, and then the agglomerated particles are vibrated and dispersed by a vibration dispersion unit.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a flow diagram of a cement clinker pulverizing process;

FIG. 2 is an overall cross-sectional view of the present invention;

FIG. 3 is a schematic view of the construction of a dispersion rod of the present invention;

FIG. 4 is an enlarged view of the invention in section X of FIG. 2;

fig. 5 is a Y-direction partial enlarged view of fig. 2 of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

As shown in fig. 1 to 5, a cement clinker pulverizing process uses a pulverizing and grinding apparatus, which comprises an outer frame 1, two reciprocating grinding units 2, two pulverizing units 3, an inlet 4, a feeding frame 5 and a shattering unit 6, and the pulverizing and grinding apparatus is adopted to pulverize cement clinker as follows:

s2, conveying: the dried small raw materials are conveyed to the inlet 4 by a bucket elevator, and are assisted to be conveyed downwards by two limiting blocks 32 which are lifted reversely;

s3, crushing: under the action of extrusion, the crushing mechanisms 38 arranged on the left and the right carry out secondary crushing treatment on small raw materials, and then, the impact mechanisms 39 carry out strong impact crushing on the small raw materials subjected to secondary crushing so as to form small-particle raw materials;

s4, grinding: the small-particle raw materials are ground by the left and right arranged grinding blocks 26 to form powdery particles, the powdery particles are conveyed by the vibration type conveying of the vibration dispersing unit 6, and the powdery particles are vibrated and dispersed while being conveyed, so that cement clinker is formed.

Two reciprocating grinding units 2 are installed at the left end and the right end of the outer frame 1, a crushing unit 3 is arranged at the upper end of each reciprocating grinding unit 2, an inlet 4 is installed in the middle of the upper end of the outer frame 1, a feeding frame 5 is installed at the lower end of the outer frame 1, and a scattering unit 6 is installed on the feeding frame 5.

Reciprocating grinding unit 2 include lifting frame 21, two racks 22, incomplete gear 23, work motor 24, connecting rod 25 and grinding block 26, be sliding fit connection between lifting frame 21 and the frame 1, two racks 22 are installed to the left and right sides inner wall of lifting frame 21, be the engaged state between rack 22 and the incomplete gear 23, incomplete gear 23 and work motor 24's output shaft, work motor 24 installs at frame 1 inner wall, lifting frame 21's the inner is connected with grinding block 26 through connecting rod 25, in concrete work, drive incomplete gear 23 through work motor 24 and rotate, drive lifting frame 21 reciprocating motion from top to bottom under the cooperation of rack and pinion, drive two reverse elevating movement of grinding block 26 through two reciprocating grinding unit 2, thereby carry out abrasive treatment to the tiny particle raw materials of whereabouts.

Grinding block 26 first half's interior terminal surface laid and be equipped with the grinding layer, the inner of grinding block 26 the latter half is equipped with the protrusion piece, and the interior terminal surface laid of protrusion piece has the fine grinding sand layer, the grinding layer all grinds the tiny particle raw materials with the fine grinding sand layer, however, the tiny particle raw materials volume after the fine grinding sand layer grinds is less than the grinding of grinding layer to tiny particle raw materials, twice grinds the effect that has improved the grinding, it is opposite to control two incomplete gear 23 dogteeth setting positions that arrange, the opposite of dogtooth position, when having guaranteed two incomplete gear 23 syntropy rotations, two lifting frames 21 are the reverse motion.

The crushing unit 3 comprises a fixed rod 31, a limiting block 32, a pressing mechanism 33, an extrusion block 34, a fixed plate 35, a sealing plate 36, a flexible plate 37, a crushing mechanism 38 and an impact mechanism 39, wherein the limiting block 32 is connected with the upper end of the lifting frame 21 through the fixed rod 31, the extrusion block 34 is installed on the inner wall of the fixed rod 31, the pressing mechanism 33 is installed on the limiting block 32, the limiting block 32 is connected with the upper end of the sealing plate 36, the lower end of the sealing plate 36 is connected with the upper end of the fixed plate 35 in a sliding fit manner, the fixed plate 35 is installed on the outer frame 1, the lower end of the fixed plate 35 is connected with the upper end of the flexible plate 37 in a sliding fit manner, the lower end of the flexible plate 37 is connected with the crushing mechanism 38 arranged at the uppermost side, the sealing plate 36 and the flexible plate 37 are arranged to achieve the effect of a limiting baffle, the, rubbing crusher constructs 38 and installs on frame 1, install striking mechanism 39 on the frame 1, and striking mechanism 39 is located rubbing crusher constructs 38's below, and concrete during operation, the lift frame 21 of elevating condition drives dead lever 31, stopper 32 elevating movement, and two stoppers 32 of arranging about play limit baffle's effect to the fritter raw materials that fall, supplementary fritter raw materials is carried downwards under the cooperation of mechanism 33 pushes down, smashes, strikes to the fritter raw materials through rubbing crusher constructs 38 and striking mechanism 39.

The pressing mechanism 33 comprises an angle plate 331, an internal spring 332 and a protective sleeve 333, a rotating groove is formed in the limiting block 32, the rotating groove is connected with the upper end of the angle plate 331 through a pin shaft, the internal spring 332 is connected between the middle of the angle plate 331 and the rotating groove, the protective sleeve 333 is sleeved outside the internal spring 332, the protective sleeve 333 plays an external protection role on the internal spring 332, when the limiting block 32 rises to the highest position in specific work, the angle plate 331 is not pressed due to the limiting and shielding of the inlet 4 on the raw material, so that the angle plate 332 pops out under the action of the internal spring 332, the falling limiting block 32 pushes and conveys the raw material downwards in an auxiliary mode, the angle plate 331 rises again under the pressing of the raw material and retracts into the rotating groove until the limiting block 32 rises to the highest position.

The inner end surface of the extrusion block 34 is of a wavy structure, so that the extrusion guiding effect is achieved, the motion tracks of the compression block 384 and the compression rod 394 are used, and the limiting block 32 is of a structure which is gradually inclined inwards from top to bottom, so that the raw materials are conveyed conveniently.

Rubbing crusher 38 include displacement block 381, locating rod 382, broken awl 383, receive pressure piece 384 and reset spring 385, locating rod 382 is installed on frame 1, be sliding fit connection between locating rod 382 and the displacement block 381, even there is reset spring 385 between locating rod 382 and the displacement block 381, receive pressure piece 384 is installed to the outer end of displacement block 381, broken awl 383 is installed to the inner of displacement block 381, concrete during operation, under reset spring 385's elastic action, receive and move about under the extrusion of the terminal surface in lift extrusion piece 34 to pressure piece 384, synchronous movement's displacement block 381 drives broken awl 383 and carries out crushing treatment to the raw materials.

The outer end face of the compression block 384 is of an arc-shaped face structure, so that the extrusion difficulty is reduced, and the outer end face of the compression block 384 is attached to the inner end face of the extrusion block 34.

The impact mechanism 39 comprises an impact block 391, an internal rod 392, a connecting spring 393, a pressure receiving rod 394, a baffle plate 395 and a sealing cloth 396, the internal rod 392 is mounted on the outer frame 1, the internal rod 392 is connected with the impact block 391 in a sliding fit manner, the connecting spring 393 is connected between the internal rod 392 and the impact block 391, the baffle plate 395 is mounted on the outer frame 1, the baffle plate 395 is positioned below the impact block 391, the sealing cloth 396 is connected between the baffle plate 395 and the grinding block 26, the sealing cloth 396 plays a role of flexible shielding, during specific work, under the elastic action of the connecting spring 393, the pressure receiving rod 394 moves left and right under the extrusion of the inner end face of the lifting extrusion block 34, and the impact block 391 which moves synchronously carries out impact processing on raw materials to reduce the volume of the raw materials.

The outer end surface of the pressure receiving rod 394 is of an arc-shaped surface structure, and the outer end surface of the pressure receiving rod 394 is attached to the inner end surface of the extrusion block 34.

The vibration scattering unit 6 comprises a conveying frame 61, a jacking frame 62, a cam 63, a connecting motor 64 and a scattering rod 65, the conveying frame 61 is connected with the feeding frame 5 in a sliding fit manner, the jacking frame 62 is installed at the lower end of the conveying frame 61, sliding grooves are evenly formed in the conveying frame 61 and are connected with the scattering rod 65 in a sliding fit manner, the scattering rod 65 is installed on the feeding frame 5, the connecting motor 64 is installed on the feeding frame 5, and the cam 63 is installed on an output shaft connected with the motor 64. during specific work, as the ground powdery particles are likely to gather mutually, the particles need to be vibrated and scattered to be in a clear state, the cam 63 is driven to rotate by the connecting motor 64, according to the cam motion principle, the conveying frame 61 is driven to vibrate by jacking the jacking frame 62, and the scattering rod 65 is matched with the impact of the scattering rod 65 on the vibrating particles, and then the powdery particles are shaken off to form the cement clinker with clear particles.

The upper end of the dispersing rod 65 is of a comb-tooth-shaped tip structure, so that powdery particles can be crushed easily, and meanwhile, the comb-tooth-shaped structure is beneficial to outputting cement clinker rightwards.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a cement clinker powder process, its has used a crushing and grinding equipment, and this crushing and grinding equipment includes frame (1), two reciprocal grinding unit (2), two crushing unit (3), inlet port (4), pay-off frame (5) and shake scattered unit (6), its characterized in that: the process for milling the cement clinker by adopting the crushing and grinding equipment comprises the following steps:

s2, conveying: the dried small raw materials are conveyed to an inlet (4) through a bucket elevator, and the small raw materials are assisted to be conveyed downwards through two limiting blocks (32) which are lifted reversely;

s3, crushing: under the action of extrusion, crushing mechanisms (38) arranged on the left and the right carry out secondary crushing treatment on small raw materials, and then, the impact mechanisms (39) carry out strong impact crushing on the small raw materials subjected to secondary crushing so as to form small-particle raw materials;

s4, grinding: grinding treatment is carried out on the small particle raw materials through grinding blocks (26) arranged on the left and the right, so that powdery particles are formed, the powdery particles are conveyed through vibration type conveying of a vibration dispersing unit (6), and the powdery particles are vibrated and dispersed while being conveyed, so that cement clinker is formed;

two reciprocating grinding units (2) are mounted at the left end and the right end of the outer frame (1), a crushing unit (3) is arranged at the upper end of each reciprocating grinding unit (2), an inlet (4) is mounted in the middle of the upper end of the outer frame (1), a feeding frame (5) is mounted at the lower end of the outer frame (1), and a vibration scattering unit (6) is mounted on the feeding frame (5);

the reciprocating grinding unit (2) comprises a lifting frame (21), two racks (22), an incomplete gear (23), a working motor (24), a connecting rod (25) and a grinding block (26), wherein the lifting frame (21) is connected with the outer frame (1) in a sliding fit manner, the two racks (22) are mounted on the inner walls of the left side and the right side of the lifting frame (21), the racks (22) and the incomplete gear (23) are in a meshed state, the incomplete gear (23) is connected with an output shaft of the working motor (24), the working motor (24) is mounted on the inner wall of the outer frame (1), and the inner end of the lifting frame (21) is connected with the grinding block (26) through the connecting rod (25);

the crushing unit (3) comprises a fixed rod (31), a limiting block (32), a pressing mechanism (33), an extrusion block (34), a fixed plate (35), a sealing plate (36), a flexible plate (37), a crushing mechanism (38) and an impact mechanism (39), wherein the limiting block (32) is connected with the upper end of a lifting frame (21) through the fixed rod (31), the extrusion block (34) is installed on the inner wall of the fixed rod (31), the pressing mechanism (33) is installed on the limiting block (32), the limiting block (32) is connected with the upper end of the sealing plate (36), the lower end of the sealing plate (36) is connected with the upper end of the fixed plate (35) in a sliding fit manner, the fixed plate (35) is installed on the outer frame (1), the lower end of the fixed plate (35) is connected with the upper end of the flexible plate (37) in a sliding fit manner, the lower end of the flexible plate (37) is connected with the, the crushing mechanism (38) is arranged on the outer frame (1), the impact mechanism (39) is arranged on the outer frame (1), and the impact mechanism (39) is positioned below the crushing mechanism (38);

shake scattered unit (6) including carriage (61), top movable frame (62), cam (63), connect motor (64) and dispersion pole (65), be connected for sliding fit between carriage (61) and pay-off frame (5), top movable frame (62) are installed to the lower extreme of carriage (61), the sliding tray has evenly been seted up on carriage (61), and be connected with dispersion pole (65) through sliding fit's mode on the sliding tray, dispersion pole (65) are installed on pay-off frame (5), install on pay-off frame (5) and connect motor (64), install cam (63) on the output shaft of connecting motor (64).

2. The cement clinker pulverizing process of claim 1, wherein: the grinding layer is laid on the inner end face of the upper half portion of the grinding block (26), the protruding block is arranged on the inner end of the lower half portion of the grinding block (26), the fine grinding sand layer is laid on the inner end face of the protruding block, and the protruding teeth of the two incomplete gears (23) which are arranged on the left and right are arranged in opposite positions.

3. The cement clinker pulverizing process of claim 1, wherein: the pressing mechanism (33) comprises an angle plate (331), an internal spring (332) and a protective sleeve (333), a rotating groove is formed in the limiting block (32), the rotating groove is connected with the upper end of the angle plate (331) through a pin shaft, the internal spring (332) is connected between the middle of the angle plate (331) and the rotating groove, and the protective sleeve (333) is sleeved outside the internal spring (332).

4. The cement clinker pulverizing process of claim 3, wherein: the inner end surface of the extrusion block (34) is of a wavy structure, and the limiting block (32) is of a structure which gradually inclines inwards from top to bottom.

5. The cement clinker pulverizing process of claim 1, wherein: rubbing crusher constructs (38) including displacement piece (381), locating lever (382), broken awl (383), receive piece (384) and reset spring (385), locating lever (382) are installed on frame (1), be sliding fit connection between locating lever (382) and displacement piece (381), even have reset spring (385) between locating lever (382) and displacement piece (381), the outer end of displacement piece (381) is installed and is received piece (384), broken awl (383) are installed to the inner of displacement piece (381).

6. The cement clinker pulverizing process of claim 5, wherein: the outer end face of the compression block (384) is of an arc-shaped face structure, and the outer end face of the compression block (384) is attached to the inner end face of the extrusion block (34).

7. The cement clinker pulverizing process of claim 1, wherein: striking mechanism (39) including striking piece (391), built-in pole (392), connecting spring (393), receive pole (394), shielding plate (395) and sealing cloth (396), built-in pole (392) are installed on frame (1), be sliding fit between built-in pole (392) and striking piece (391) and be connected, even have connecting spring (393) between built-in pole (392) and striking piece (391), install shielding plate (395) on frame (1), shielding plate (395) are located the below of striking piece (391), even have sealing cloth (396) between shielding plate (395) and grinding block (26).

8. The cement clinker pulverizing process of claim 7, wherein: the outer end face of the pressure receiving rod (394) is of an arc-shaped face structure, and the outer end face of the pressure receiving rod (394) is attached to the inner end face of the extrusion block (34).

9. The cement clinker pulverizing process of claim 1, wherein: the upper end of the dispersion rod (65) is of a comb-tooth-shaped tip structure.