CN111099848A

CN111099848A - Process for preparing cement by clinker and weighing and mixing equipment used for process

Info

Publication number: CN111099848A
Application number: CN202010006267.7A
Authority: CN
Inventors: 王六金
Original assignee: Tongxiang Gaoyang Cement Co ltd
Current assignee: Tongxiang Gaoyang Cement Co ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-05-05

Abstract

The invention relates to a process for preparing cement by clinker, which comprises the following steps: step 1: detecting clinker, randomly selecting some clinker in the purchased clinker to detect the performance of the clinker; step 2: calculating ingredients, and calculating the ingredient proportion according to the detected performance of the clinker; and step 3: weighing and mixing materials, namely weighing and mixing the clinker and the ingredients by using weighing and mixing equipment to obtain a cement raw material; and 4, step 4: coarse pressing, namely, rolling the mixed cement raw materials by using a mixing press to press the mixed cement raw materials into cement powder; and 5: selecting powder, namely screening the coarsely pressed cement powder by using screening equipment; step 6: fine grinding, namely performing fine grinding by using a ball mill to prepare cement; and 7: and (4) warehousing and packaging, namely conveying the prepared cement into a cement warehouse and packaging. The invention has the effects of directly purchasing clinker to carry out subsequent production and processing to prepare cement and saving the production cost of small and medium-sized cement preparation plants.

Description

Process for preparing cement by clinker and weighing and mixing equipment used for process

Technical Field

The invention relates to the technical field of cement preparation, in particular to a process for preparing cement by clinker and weighing and mixing equipment for the process.

Background

Cement is a powdered hydraulic inorganic cementitious material. The water is added and stirred to form slurry which can be hardened in the air or better hardened in the water and can firmly bond sand, stone and other materials together. The early lime and pozzolan mixtures are similar to modern lime and pozzolan cements, and concrete made by cementing crushed stone with them not only has higher strength after hardening, but also resists erosion by fresh water or salt-containing water. As an important cementing material, the high-performance cement is widely applied to engineering of civil construction, water conservancy, China and the like for a long time.

The prior Chinese patent with publication number CN107382106A discloses a cement production process, which is characterized in that the cement is prepared by the following steps: mixing materials: fully mixing limestone, clay, iron powder and muscovite; grinding: fully grinding the mixed raw materials to obtain raw materials; and (3) calcining: calcining the mixed raw material at the high temperature of 1400-1600 ℃, simultaneously performing alkali discharge treatment in the calcining process, controlling the weight ratio of alkali content to be less than 0.5, and separating gypsum, clinker and mixed material in the product to obtain clinker; mixing modification: and stirring and mixing the cement modifier and the separated clinker to obtain a cement product.

The above prior art solutions have the following drawbacks: the existing cement preparation starts from clinker preparation, a high-temperature boiler is used for calcination of the clinker, a series of waste treatment equipment is further needed for treating waste water and waste residues after calcination, and the cost is too high for medium and small cement preparation plants.

Disclosure of Invention

The invention aims to provide a process for preparing cement by clinker, which can prepare cement by directly purchasing the clinker for subsequent production and processing, and saves the production cost of small and medium-sized cement preparation plants.

The above object of the present invention is achieved by the following technical solutions:

a process for preparing cement by clinker comprises the following steps:

step 1: detecting clinker, randomly selecting some clinker in the purchased clinker to detect the performance of the clinker;

step 2: calculating ingredients, and calculating the ingredient proportion according to the detected performance of the clinker;

and step 3: weighing and mixing materials, namely weighing and mixing the clinker and the ingredients by using weighing and mixing equipment to obtain a cement raw material;

and 4, step 4: coarse pressing, namely, rolling the mixed cement raw materials by using a mixing press to press the mixed cement raw materials into cement powder;

and 5: selecting powder, namely screening the coarsely pressed cement powder by using screening equipment, and filtering out cement powder with overlarge particles;

step 6: fine grinding, namely putting the screened cement powder into a ball mill for fine grinding to prepare cement;

and 7: and (4) warehousing and packaging, namely conveying the prepared cement into a cement warehouse and packaging.

By adopting the technical scheme, as the clinker is directly purchased and the mass ratio of the clinker is unknown, the purchased clinker needs to be detected in the component ratio, the auxiliary materials are added according to the actual condition of the clinker after the ratio is detected, so that the processed cement has higher quality, and the clinker can be directly purchased to be subsequently produced and processed to prepare the cement, thereby saving the production cost of small and medium-sized cement preparation plants.

The invention is further configured to: and the cement powder with overlarge particles filtered by the screening equipment is sent to the mixing press again for coarse pressing, and then screening is carried out again.

Through adopting above-mentioned technical scheme, send unqualified cement powder into the muddy press machine again and roughly press, carry out follow-up step again until the cement powder is qualified, can prevent when resources are saved that the compounding is inhomogeneous to lead to the ratio of qualified and unqualified cement powder all not to accord with preset the ratio, guaranteed the quality of cement.

The utility model provides a compounding equipment of weighing for grog preparation cement technology, includes support body, conveyer belt, weighing machine structure and compounding fill, the conveyer belt has a plurality of and all installs on the support body and rotate on the support body, weighing machine structure have a plurality of and with the conveyer belt one-to-one, all install one side on the support body, weighing machine constructs and has seted up the discharge gate, the discharge gate is towards the conveyer belt, the compounding fill is kept away from weighing machine structure one side in the support body and is placed subaerial.

Through adopting above-mentioned technical scheme, weigh through a plurality of equal grog of weighing machine structure and various auxiliary materials, all carry the compounding in the material mixing hopper through the conveyer belt with grog and auxiliary material after the completion of weighing, in grog and auxiliary material got into the material mixing hopper simultaneously, directly carry out the compounding, need not to adopt the mixer to stir save time and the energy can be saved.

The invention is further configured to: the weighing mechanism comprises weighing frames, storage hoppers and weight sensors, the weighing frames are provided with two conveying belts which are respectively arranged on the frame body on two sides, the storage hoppers are arranged between the two weighing frames and vertically slide on the weighing frames, the weight sensors are provided with two conveying belts which are respectively arranged on the two weighing frames, the storage hoppers are supported by the butt of the upper end faces of the weight sensors, the storage hoppers are provided with discharge ports, and blocking assemblies are arranged at the discharge ports of the storage hoppers.

Through adopting above-mentioned technical scheme, the material is poured into and is weighed the material through weighing sensor in the storage hopper, stops reinforced when the material reaches required weight after, stops the subassembly after so the material reaches required treatment and leaves the storage hopper discharge gate, makes the material unloading simultaneously and carries through the conveyer belt simultaneously, and the ratio of various materials has been guaranteed to weighing machine structure, makes the ratio of cement more accurate, makes the cement quality of preparation increase more.

The invention is further configured to: stop the subassembly including stopping board and driving piece, the stopping board has two to set up respectively in the storage hopper both sides, and the storage hopper is all worn out to two stopping board back of the body one side mutually, the driving piece sets firmly on the storage hopper, and the driving piece is worn out storage hopper one side in the stopping board and is connected on the storage hopper, and the drive stops the board and slides on the storage hopper, and two stopping boards all slide towards in opposite directions or back of the body direction mutually.

Through adopting above-mentioned technical scheme, the barrier plate is used for blockking can not leak outward before the discharge gate is in the material storage fill material and reachs required volume, has guaranteed the weight of material, and the driving piece is used for driving the baffle, realizes the electric drive of baffle.

The invention is further configured to: the blocking plates are obliquely arranged, and one sides of the two blocking plates in opposite directions are lower than the side of the two blocking plates opposite to each other.

Through adopting above-mentioned technical scheme, the barrier plate that the slope set up can promote the barrier plate and lead to the material when sliding mutually on the back at the driving piece, prevents that the material from piling up in the storage hopper to the material that leads to getting into the mixing hopper is less than the volume of actual required material.

The invention is further configured to: the frame body is provided with a driving motor, and the driving motor drives all the conveying belts to synchronously rotate.

Through adopting above-mentioned technical scheme, all conveyer belts of driving motor simultaneous drive realize the synchronization of conveyer belt, guarantee that the material gets into in the mixing hopper simultaneously.

The invention is further configured to: the frame body is fixedly provided with a material guide plate which is obliquely arranged on one side close to the material mixing hopper, and the material guide plate is tangent to the conveying belt and is inclined towards the material mixing hopper.

Through adopting above-mentioned technical scheme, in the setting of stock guide was used for guiding the material to get into the storage hopper, reduced dropping of material and run off, guaranteed the volume of material.

In conclusion, the beneficial technical effects of the invention are as follows:

the clinker is directly purchased, and the mass ratio of the clinker is unknown, so the component ratio of the purchased clinker needs to be detected, the addition of auxiliary materials is carried out according to the actual condition of the clinker after the mixture ratio is detected, the quality of the processed cement is higher, and the clinker can be directly purchased to carry out subsequent production and processing to prepare the cement, so the production cost of small and medium-sized cement preparation plants is saved;

unqualified cement powder is sent into the mixing press again for rough pressing, and the subsequent steps are carried out until the cement powder is qualified, so that the resource is saved, the condition that the ratio of the qualified cement powder and the ratio of the unqualified cement powder do not accord with the preset ratio due to nonuniform mixing can be prevented, and the quality of cement is ensured;

the clinker and various auxiliary materials are weighed by a plurality of weighing mechanisms, the clinker and the auxiliary materials are conveyed into a mixing hopper through a conveying belt to be mixed after weighing is finished, the clinker and the auxiliary materials enter the mixing hopper simultaneously to be directly mixed, and a stirrer is not required to be used for stirring, so that time and energy are saved;

the weighing mechanism ensures the proportion of various materials, so that the proportion of cement is more accurate, and the quality of prepared cement is higher;

the barrier plate is used for preventing the materials in the material storage hopper at the material outlet from leaking outside before reaching the required amount, so that the weight of the materials is ensured, and the driving piece is used for driving the baffle plate to realize electric driving of the baffle plate;

the driving motor drives all the conveying belts simultaneously, so that the synchronization of the conveying belts is realized, and the materials are ensured to enter the mixing hopper simultaneously.

Drawings

FIG. 1 is a schematic process flow diagram of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a schematic view of the structure of the weighing mechanism of the present invention.

FIG. 4 is a schematic cross-sectional view of a storage hopper of the present invention.

In the figure, 1, a frame body; 2. a conveyor belt; 3. a weighing mechanism; 301. a weighing frame; 302. a storage hopper; 303. a weight sensor; 4. a mixing hopper; 5. a discharge port; 6. a blocking component; 601. a blocking plate; 602. a drive member; 7. a drive motor; 8. a material guide plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the process for preparing cement by using clinker disclosed by the invention comprises the following steps:

The clinker is directly purchased, and the mass ratio of the clinker is unknown, so the component ratio of the purchased clinker needs to be detected, the addition of auxiliary materials is carried out according to the actual condition of the clinker after the mixture ratio is detected, the quality of the processed cement is higher, and the clinker can be directly purchased to carry out subsequent production and processing to prepare the cement, so the production cost of small and medium-sized cement preparation plants is saved; the screening installation filters the too big cement powder of granule that filters out, sends into the machine of mixing again and carries out the coarse compaction, and later screening once more sends unqualified cement powder into the machine of mixing again and carries out the coarse compaction, carries out follow-up step again until the cement powder is qualified, can prevent when resources are saved that the compounding is inhomogeneous to lead to the ratio of qualified and unqualified cement powder all not to accord with preset the ratio, has guaranteed the quality of cement.

Referring to fig. 2 and 4, the weighing and mixing device for the clinker cement preparation process disclosed by the invention comprises a frame body 1 and three conveyor belts 2 which are all installed on the frame body 1 and rotate on the frame body 1, three groups of weighing mechanisms 3 which are in one-to-one correspondence with the conveyor belts 2 and are all installed on one side of the frame body 1 and a mixing hopper 4 which is placed on the ground on one side of the frame body 1 away from the weighing mechanisms 3, wherein a discharge port 5 is formed in the weighing mechanism 3, the discharge port 5 faces the conveyor belts 2, clinker and various auxiliary materials are weighed through a plurality of weighing mechanisms 3, the clinker and the auxiliary materials are all conveyed into the mixing hopper 4 through the conveyor belts 2 after weighing is completed, and the clinker and the auxiliary materials enter the mixing hopper 4 at the same time to be directly mixed, so that a stirrer is not needed to be.

Referring to fig. 2 and 3, the weighing mechanism 3 includes two weighing frames 301 respectively mounted on the frame body 1 at two sides of the conveyor belt 2, a storage hopper 302 mounted between the two weighing frames 301, and two weight sensors 303 respectively mounted on the two weighing frames 301, the storage hopper 302 slides vertically on the weighing frames 301, the upper end surfaces of the weight sensors 303 abut against and support the storage hopper 302, a discharge port 5 is formed on the storage hopper 302, a blocking assembly 6 is mounted at the discharge port 5 of the storage hopper 302, the material is poured into the storage hopper 302 and weighed by the weight sensors 303, stop reinforced after the material reaches required weight, stop the subassembly 6 and leave storage hopper 302 discharge gate 5 after so the material reaches required treatment, make the material unloading simultaneously and carry simultaneously through conveyer belt 2, weighing mechanism 3 has guaranteed the ratio of various materials, makes the ratio of cement more accurate, makes the cement quality of preparation increase more.

Referring to fig. 2, 3 and 4, the blocking assembly 6 includes two blocking plates 601 respectively disposed on two sides of the storage hopper 302 and a driving member 602 fixedly disposed on the storage hopper 302, wherein opposite sides of the two blocking plates 601 both penetrate through the storage hopper 302, the driving member 602 is preferably an electric cylinder, the driving member 602 is connected to the storage hopper 302 on a side where the blocking plates 601 penetrate through the storage hopper 302, and drives the blocking plates 601 to slide on the storage hopper 302, the two blocking plates 601 both slide toward each other or away from each other, the blocking plates 601 are used for blocking the material in the storage hopper 302 at the discharge port 5 from leaking out until the material reaches a required amount, so as to ensure the weight of the material, and the driving member 602 is used for driving the blocking plate, so as to realize electric driving of the; the blocking plate 601 inclines and sets up, and two blocking plates 601 are less than two blocking plates 601 one side that backs on the back in opposite directions on one side, and the blocking plate 601 that the slope set up can lead to the material when driving piece 602 promotes blocking plate 601 and slides on the back in the back, prevents that the material from piling up in storage hopper 302 to the material that leads to getting into mixing hopper 4 is less than the volume of actual required material.

Referring to fig. 2, a driving motor 7 is installed on the frame body 1, the driving motor 7 drives all the conveying belts 2 to synchronously rotate, and the driving motor 7 drives all the conveying belts 2 simultaneously, so that the synchronization of the conveying belts 2 is realized, the materials are ensured to enter the mixing hopper 4 simultaneously, and meanwhile, the power resources are saved; support body 1 sets firmly the stock guide 8 that the slope set up in being close to mixing hopper 4 one side, and stock guide 8 is tangent with conveyer belt 2, and towards mixing hopper 4 slope, the setting of stock guide 8 is used for guiding the material to get into storage hopper 302 in, reduces dropping of material and runs off, has guaranteed the volume of material.

The implementation principle of the embodiment is as follows: in passing through the storage hopper 302 that screw conveyer carried with the material, when the volume of material reaches required weight in the storage hopper 302, screw conveyer stops the pay-off, driving piece 602 drives two blocks of barrier plates 601 and slides mutually oppositely when all materials all reach required weight, the material drops to conveyer belt 2 on, play driving motor 7 and drive the material and get into simultaneously and carry out the compounding in mixing hopper 4, carry out the subsequent handling in the material conveying machine after the compounding is accomplished through screw conveyer after will mixing.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A process for preparing cement by clinker comprises the following steps:

2. A process for the preparation of cement from clinker according to claim 1, wherein: and the cement powder with overlarge particles filtered by the screening equipment is sent to the mixing press again for coarse pressing, and then screening is carried out again.

3. A weighing and mixing equipment for a clinker cement preparation process is characterized in that: including support body (1), conveyer belt (2), weighing machine structure (3) and mixing hopper (4), conveyer belt (2) have a plurality of all to install on support body (1) and rotate on support body (1), weighing machine structure (3) have a plurality of and with conveyer belt (2) one-to-one, all install one side on support body (1), seted up discharge gate (5) on weighing machine structure (3), discharge gate (5) are towards conveyer belt (2), mixing hopper (4) are kept away from weighing machine structure (3) one side in support body (1) and are placed subaerial.

4. A weighing and mixing apparatus for a clinker preparation cement process according to claim 3, characterized in that: weighing machine constructs (3) including weighing frame (301), storage hopper (302) and weighing sensor (303), weighing frame (301) have two to be installed on support body (1) in conveyer belt (2) both sides respectively, install between two weighing frame (301) storage hopper (302), and vertical sliding on weighing frame (301), weighing sensor (303) have two, install respectively on two weighing frame (301), and storage hopper (302) is supported to weighing sensor (303) up end butt, discharge gate (5) have been seted up on storage hopper (302), and storage hopper (302) discharge gate (5) department is installed and is blockked subassembly (6).

5. A weighing and mixing device for a clinker preparation cement process according to claim 4, characterized in that: stop subassembly (6) including stopping board (601) and driving piece (602), stop board (601) and have two to set up respectively in storage hopper (302) both sides, two stop board (601) one side that backs on the back all wear out storage hopper (302), driving piece (602) set firmly on storage hopper (302), and driving piece (602) are worn out storage hopper (302) one side in stopping board (601) and are connected on storage hopper (302), and drive stop board (601) and slide on storage hopper (302), and two stop board (601) all slide towards in opposite directions or the direction that backs on the back.

6. A weighing and mixing device for a clinker preparation cement process according to claim 5, characterized in that: the blocking plates (601) are obliquely arranged, and one sides of the two blocking plates (601) opposite to each other are lower than the opposite sides of the two blocking plates (601).

7. A weighing and mixing apparatus for a clinker preparation cement process according to claim 3, characterized in that: install driving motor (7) on support body (1), driving motor (7) drive all conveyer belts (2) synchronous rotation simultaneously.

8. A weighing and mixing device for a clinker preparation cement process according to any of claims 3-7, characterized in that: the frame body (1) is provided with a guide plate (8) which is obliquely arranged on one side close to the mixing hopper (4), and the guide plate (8) is tangent to the conveying belt (2) and inclines towards the mixing hopper (4).