Process and device for manufacturing building bricks by using fluorgypsum

Abstract

The invention relates to the technical field of building materials, in particular to a process and a device for manufacturing building bricks by using fluorgypsum, when the building bricks are manufactured by using the fluorgypsum, the building bricks are prepared by using the fluorgypsum, fly ash, cement, an exciting agent, carbon fibers and a foaming agent as raw materials, the addition amount of solid waste is greater than 75%, and the addition amount of the foaming agent is less than 75%. The wall brick is high in slag consumption, low in cost and free of secondary pollution, so that the environment is protected, meanwhile, the fluorgypsum, the fly ash, the cement, the exciting agent, the carbon fibers and the foaming agent are common and easy to obtain as raw materials, the preparation process is simple, the preparation time is shortened, and the problem that in the process of preparing the wall brick by an existing preparation method, the cost is low is solved. In the prior art, a plurality of industrial waste residue raw materials need to be used together, but the industrial waste residue raw materials are not common and easy to obtain, so that the preparation process is tedious, and the preparation time is increased.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, and in particular to a process and a device for making building bricks by using fluorgypsum. Background Art

[0002] Fluorogypsum is a waste residue mainly composed of anhydrous calcium sulfate produced by the reaction of sulfuric acid and fluorite during the production of hydrofluoric acid. It is a by-product produced in the production of hydrofluoric acid. Most of the fluorogypsum is stored as general solid waste after a slight neutralization treatment. Direct storage not only occupies land, but also causes pollution to the soil and groundwater environment.

[0003] Prior art CN102503339A discloses a new type of wall brick made of fluorinated gypsum and tailings waste and a preparation method thereof. The wall brick is made of solid material, an active stimulant and water, wherein the active stimulant accounts for 0.2-0.4% of the total mass of the solid material, and the water accounts for 10-15% of the total mass of the solid material and the active stimulant. The preparation method consumes a large amount of slag (the amount of fluorinated gypsum and tailings waste can account for more than 80% of the mass of the brick body), has low cost, does not generate secondary pollution during the production process, and protects the environment.

[0004] However, the above-mentioned preparation method needs to use a variety of industrial waste residue raw materials together in the process of preparing wall bricks, and industrial waste residue raw materials are not common and easily available, which makes the preparation process more complicated, thereby increasing the preparation time. Summary of the invention

[0005] The purpose of the present invention is to provide a process and device for making building bricks using fluorinated gypsum, which solves the technical problem that in the process of preparing wall bricks, the existing preparation method needs to use a variety of industrial waste slag raw materials together, and the industrial waste slag raw materials are not common and easy to obtain, resulting in a more complicated preparation process, thereby increasing the preparation time.

[0006] To achieve the above object, in a first aspect, the present invention provides a process for making building bricks using fluorgypsum, comprising the following steps:

[0007] Weighing raw materials: weighing raw materials for preparing building bricks, wherein the raw materials are fluorgypsum, fly ash, cement, activator, carbon fiber and foaming agent;

[0008] Raw material processing, grinding the raw materials taken symmetrically respectively, and sieving after grinding to obtain the required raw material powder;

[0009] Stirring, pouring the raw material powders into a stirring box respectively, adding distilled water into the stirring box according to a suitable water-to-material ratio, stirring and mixing the raw material powders and the distilled water to obtain a semi-dry material;

[0010] Molding, feeding the semi-dry material into a mold for pressing to obtain a molded brick;

[0011] Curing and drying: properly curing the bricks to achieve a certain strength, and after curing, drying the bricks to remove excess moisture in the bricks;

[0012] Inspection: Perform quality inspection on the dried bricks to ensure that they meet the standards for building bricks. After the inspection, the bricks that pass the inspection are transferred to a storage room for unified storage.

[0013] The raw material processing comprises grinding the symmetrically taken raw materials respectively and sieving them after grinding to obtain the required raw material powder in the following specific steps:

[0014] Pour the weighed corresponding components of fluorgypsum, fly ash, cement, activator, carbon fiber and foaming agent into a grinding box for grinding to obtain fluorgypsum powder, fly ash powder, cement powder, activator powder, carbon fiber powder and foaming agent powder;

[0015] After grinding, the fluorgypsum powder, the fly ash powder, the cement powder, the activator powder, the carbon fiber powder and the foaming agent powder are sieved respectively to obtain raw material powders of 100-200 meshes.

[0016] The stirring step of pouring the raw material powders into a stirring box respectively, adding distilled water into the stirring box according to a suitable water-to-material ratio, stirring and mixing the raw material powders and the distilled water to obtain a semi-dry material is as follows:

[0017] Pour fluorinated gypsum powder, fly ash powder, cement powder, carbon fiber powder and foaming agent powder into the mixing box in sequence;

[0018] Add distilled water into the mixing box at a water-to-material ratio of 1:10, and stir and mix the fluorgypsum powder, the fly ash powder, the cement powder, the carbon fiber powder, the foaming agent powder and the distilled water;

[0019] After stirring and mixing, the activator powder is added into the stirring box, and stirred and mixed again to obtain a semi-dry material.

[0020] The specific steps of forming the semi-dry material into a mold for pressing to obtain a formed brick are as follows:

[0021] After stirring and mixing, the obtained semi-dry material is allowed to stand for 2-5 hours, and then the semi-dry material is fed into a mold;

[0022] The semi-dry material is pressed in the mold by mechanical pressure to obtain a formed brick.

[0023] The curing and drying process includes curing the bricks properly to achieve a certain strength, and drying the bricks after curing to remove excess water from the bricks.

[0024] After the formed bricks are obtained, the bricks are transferred to a curing room, first watered for curing for 10-15 days, and then naturally cured for 28 days, so that the bricks reach a suitable strength;

[0025] After curing, the green bricks are transferred to a drying chamber, where they are dried to remove excess moisture from the green bricks.

[0026] The specific steps of the inspection, which involves conducting a quality inspection on the dried bricks to ensure that they meet the standards for building bricks, and transferring the bricks that have passed the inspection to a storage room for unified storage, are as follows:

[0027] After the bricks are dried, the bricks are transferred to a cooling chamber for cooling;

[0028] After the bricks are cooled to room temperature, the bricks are transferred to an inspection room for quality inspection to ensure that the bricks meet the standards for building bricks;

[0029] After the inspection, the brick blanks that have passed the inspection are transferred to a storage room, and the qualified brick blanks are stored uniformly.

[0030] In a second aspect, the present invention also provides a device for making building bricks using fluorgypsum, comprising a grinding box, a screen, a mixing box, a mold, a curing room, a drying room, a cooling room, an inspection room and a storage room, wherein the screen is arranged in the grinding box, and the grinding box, the mixing box, the mold, the curing room, the drying room, the cooling room, the inspection room and the storage room are placed on the ground in sequence from left to right.

[0031] The invention discloses a process and device for making building bricks by using fluorgypsum. When making building bricks by using fluorgypsum, the preparation process uses fluorgypsum, fly ash, cement, activator, carbon fiber and foaming agent as raw materials to prepare the building bricks. The amount of solid waste added is greater than 75%, the amount of slag consumed is large, the cost is low, and no secondary pollution is generated, thereby protecting the environment. At the same time, fluorgypsum, fly ash, cement, activator, carbon fiber and foaming agent are more common and easily available as raw materials, and the preparation process is simpler, thereby shortening the preparation time, and solving the technical problem that the existing preparation method needs to use a variety of industrial waste residue raw materials together in the process of preparing wall bricks, and the industrial waste residue raw materials are not common and easily available, resulting in a more complicated preparation process, thereby increasing the preparation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0033] Figure 1 It is a flowchart of a process for making building bricks using fluorinated gypsum according to the first embodiment of the present invention.

[0034] Figure 2 This is a specific step diagram of the raw material processing of the process of making building bricks using fluorgypsum in the first embodiment of the present invention, wherein the symmetrically taken raw materials are ground respectively and sieved after grinding to obtain the required raw material powder.

[0035] Figure 3 This is a specific step diagram of the mixing process of making building bricks using fluorinated gypsum according to the first embodiment of the present invention. The raw material powders are poured into a mixing box respectively, and then distilled water is added to the mixing box according to a suitable water-to-material ratio, and the raw material powders and the distilled water are stirred and mixed to obtain a semi-dry material.

[0036] Figure 4 This is a process diagram of the molding of the process of making building bricks using fluorgypsum according to the first embodiment of the present invention, in which the semi-dry material is fed into a mold for pressing to obtain a molded brick.

[0037] Figure 5 This is a process step diagram of the curing and drying process of making building bricks using fluorinated gypsum according to the first embodiment of the present invention, wherein the bricks are properly cured to achieve a certain strength, and after curing, the bricks are dried to remove excess moisture in the bricks.

[0038] Figure 6 This is a specific step diagram of the inspection of the process of making building bricks using fluorgypsum according to the first embodiment of the present invention, in which the quality of the dried bricks is inspected to ensure that they meet the standards for building bricks, and after the inspection, the qualified bricks are transferred to a storage room for unified storage.

[0039] Figure 7 It is a schematic structural diagram of a device for making building bricks using fluorinated gypsum according to a second embodiment of the present invention.

[0040] In the figure: 101-grinding box, 102-screen, 103-mixing box, 104-mould, 105-curing room, 106-drying room, 107-cooling room, 108-inspection room, 109-storage room. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0042] First embodiment:

[0043] See also Figures 1 to 6 The present invention provides a process for making building bricks using fluorinated gypsum, comprising the following steps:

[0044] S1. Weighing raw materials: weighing raw materials for preparing building bricks, wherein the raw materials are fluorgypsum, fly ash, cement, an activator, carbon fiber and a foaming agent.

[0045] Specifically, raw materials for preparing building bricks are weighed, and the raw materials are fluorgypsum, fly ash, cement, activator, carbon fiber and foaming agent, wherein the specific components of the raw materials are: 70-85 parts of fluorgypsum, 5-15 parts of fly ash, 6-12 parts of cement, 1-3 parts of activator, 3-5 parts of carbon fiber and 3-6 parts of foaming agent.

[0046] S2, raw material processing, grinding the symmetrically taken raw materials respectively, and sieving them after grinding to obtain the required raw material powder.

[0047] Specifically, the raw material processing comprises grinding the symmetrically taken raw materials respectively and sieving them after grinding to obtain the desired raw material powder in the following specific steps:

[0048] S21, pouring the weighed corresponding components of fluorgypsum, fly ash, cement, activator, carbon fiber and foaming agent into the grinding box 101 for grinding to obtain fluorgypsum powder, fly ash powder, cement powder, activator powder, carbon fiber powder and foaming agent powder;

[0049] S22. After grinding, sieving the fluorgypsum powder, the fly ash powder, the cement powder, the activator powder, the carbon fiber powder and the foaming agent powder respectively to obtain raw material powders of 100-200 mesh.

[0050] S3, stirring, pouring the raw material powders into the stirring box 103 respectively, and then adding distilled water into the stirring box 103 according to a suitable water-to-material ratio, stirring and mixing the raw material powders and the distilled water to obtain a semi-dry material.

[0051] Specifically, the stirring comprises pouring the raw material powders into the stirring box 103 respectively, adding distilled water into the stirring box 103 according to a suitable water-to-material ratio, stirring and mixing the raw material powders and the distilled water, and obtaining a semi-dry material in the following specific steps:

[0052] S31, pouring fluorinated gypsum powder, fly ash powder, cement powder, carbon fiber powder and foaming agent powder into the mixing box 103 in sequence;

[0053] S32, adding distilled water into the mixing box 103 at a water-to-material ratio of 1:10, and stirring and mixing the fluorgypsum powder, the fly ash powder, the cement powder, the carbon fiber powder, the foaming agent powder and the distilled water;

[0054] S33, after stirring and mixing, add the activator powder into the stirring box 103, and stir and mix again to obtain semi-dry material.

[0055] S4, molding, feeding the semi-dry material into the mold 104 for pressing to obtain a molded brick.

[0056] Specifically, the molding, feeding the semi-dry material into the mold 104 for pressing, to obtain the molded bricks, comprises the following specific steps:

[0057] S41, after stirring and mixing, the obtained semi-dry material is allowed to stand for 2-5 hours, and then the semi-dry material is fed into the mold 104;

[0058] S42, compressing the semi-dry material in the mold 104 by mechanical pressure to obtain a formed brick.

[0059] S5, curing and drying, performing appropriate curing on the bricks to achieve a certain strength, and after curing, drying the bricks to remove excess moisture in the bricks.

[0060] Specifically, the curing and drying are to properly cure the bricks to achieve a certain strength, and after curing, to dry the bricks to remove excess water in the bricks. The specific steps are:

[0061] S51, after the formed bricks are obtained, the bricks are transferred to the curing room 105, firstly watered and cured for 10-15 days, and then naturally cured for 28 days, so that the bricks reach a suitable strength;

[0062] S52, after curing, the green bricks are transferred to a drying chamber 106, and the green bricks are dried in the drying chamber 106 to remove excess moisture in the green bricks.

[0063] Specifically, the bricks are dried in the drying chamber 106 at a temperature of 300-800° C. and a drying time of 8-20 hours.

[0064] S6, inspection, performing quality inspection on the dried bricks to ensure that they meet the standards for building bricks, and after the inspection, transferring the bricks that have passed the inspection to the storage room 109 for unified storage.

[0065] Specifically, the inspection is to conduct a quality inspection on the dried bricks to ensure that they meet the standards for building bricks, and after the inspection, the qualified bricks are transferred to the storage room 109 for unified storage. The specific steps are:

[0066] S61, after the bricks are dried, the bricks are transferred to the cooling chamber 107 for cooling;

[0067] S62, when the bricks are cooled to room temperature, the bricks are transferred to the inspection room 108, and the quality of the bricks is inspected to ensure that the bricks meet the standards for building bricks;

[0068] S63. After inspection, the brick blanks that have passed the inspection are transferred to the storage room 109, and the qualified brick blanks are stored uniformly.

[0069] When a process for making building bricks using fluorgypsum according to the present embodiment is used, the preparation process uses fluorgypsum, fly ash, cement, activator, carbon fiber and foaming agent as raw materials to prepare building bricks when using fluorgypsum to make building bricks. The amount of solid waste added is greater than 75%, the amount of slag consumed is large, the cost is low, and no secondary pollution is generated, thereby protecting the environment. At the same time, fluorgypsum, fly ash, cement, activator, carbon fiber and foaming agent are more common and easily available as raw materials, and the preparation process is simpler, thereby shortening the preparation time, and solving the technical problem that the existing preparation method needs to use a variety of industrial waste slag raw materials together in the process of preparing wall bricks, and the industrial waste slag raw materials are not common and easily available, resulting in a more complicated preparation process, thereby increasing the preparation time.

[0070] Second embodiment:

[0071] Based on the first embodiment, please refer to Figure 7 The present invention also provides a device for making building bricks using fluorinated gypsum, including a grinding box 101, a screen 102, a mixing box 103, a mold 104, a curing room 105, a drying room 106, a cooling room 107, an inspection room 108 and a storage room 109.

[0072] In this embodiment, by using the grinding box 101, the screen 102, the mixing box 103, the mold 104, the curing room 105, the drying room 106, the cooling room 107, the inspection room 108 and the storage room 109 in coordination, fluorgypsum can be used to produce building bricks with good mechanical properties and stability, thereby realizing the resource utilization of industrial waste residues such as fluorgypsum and reducing environmental pollution.

[0073] Among them, the screen 102 is arranged in the grinding box 101, and the grinding box 101, the mixing box 103, the mold 104, the curing chamber 105, the drying chamber 106, the cooling chamber 107, the inspection chamber 108 and the storage chamber 109 are all placed on the ground. The grinding box 101 is used to grind the symmetrically taken raw materials to obtain raw material powder, the screen 102 is used to screen the ground raw material powder to obtain raw material powder with standard particles, the mixing box 103 is used to stir and mix the raw material powder and distilled water, the mold 104 is used to press the semi-dry material obtained after stirring and mixing, the curing chamber 105 is used to cure the pressed brick blanks, the drying chamber 106 is used to dry the cured brick blanks, the cooling chamber 107 is used to cool the dried brick blanks, the inspection chamber 108 is used to inspect the quality of the cooled brick blanks, and the storage chamber 109 is used to store the brick blanks that pass the inspection.

[0074] When using the device for making building bricks using fluorinated gypsum according to the present embodiment, the raw materials for preparing building bricks are weighed, and the raw materials are fluorinated gypsum, fly ash, cement, activator, carbon fiber and foaming agent. Then, the weighed raw materials are respectively poured into the grinding box 101 for grinding. After grinding, the raw materials are sieved at the screen 102 to obtain the required raw material powder with particle size standard. Then, the raw material powder is respectively poured into the mixing box 103, and distilled water is added to the mixing box 103 according to a suitable water-to-material ratio. The raw material powder and the distilled water are stirred and mixed. After stirring and mixing, the obtained semi-dry material is sent to the mold. The bricks are pressed in the mold 104 to obtain formed bricks, and then the bricks are transferred to the curing chamber 105, and properly cured in the curing chamber 105 to achieve a certain strength. After curing, the bricks are transferred to the drying chamber 106 for drying to remove excess moisture in the bricks, and then the dried bricks are transferred to the cooling chamber 107 for cooling. After the bricks are cooled to room temperature, they are transferred to the inspection chamber 108 for quality inspection to ensure that they meet the standards for building bricks. After the inspection, the qualified bricks are transferred to the storage chamber 109 for unified storage.

[0075] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A process for making building bricks using fluorinated gypsum, characterized in that: The following steps are involved: Weighing raw materials: weighing raw materials for preparing building bricks, wherein the raw materials are fluorgypsum, fly ash, cement, activator, carbon fiber and foaming agent; Raw material processing, grinding the raw materials taken symmetrically respectively, and sieving after grinding to obtain the required raw material powder; Stirring, pouring the raw material powders into a stirring box respectively, adding distilled water into the stirring box according to a suitable water-to-material ratio, stirring and mixing the raw material powders and the distilled water to obtain a semi-dry material; Molding, feeding the semi-dry material into a mold for pressing to obtain a molded brick; Curing and drying: properly curing the bricks to achieve a certain strength, and after curing, drying the bricks to remove excess moisture in the bricks; Inspection: Perform quality inspection on the dried bricks to ensure that they meet the standards for building bricks. After the inspection, the bricks that pass the inspection are transferred to a storage room for unified storage.

2. The process for making building bricks using fluorinated gypsum as claimed in claim 1, characterized in that: The raw material processing comprises grinding the symmetrically taken raw materials respectively and sieving them after grinding to obtain the required raw material powder in the following specific steps: Pour the weighed corresponding components of fluorgypsum, fly ash, cement, activator, carbon fiber and foaming agent into a grinding box for grinding to obtain fluorgypsum powder, fly ash powder, cement powder, activator powder, carbon fiber powder and foaming agent powder; After grinding, the fluorgypsum powder, the fly ash powder, the cement powder, the activator powder, the carbon fiber powder and the foaming agent powder are sieved respectively to obtain raw material powders of 100-200 meshes.

3. The process for making building bricks using fluorinated gypsum as claimed in claim 1, characterized in that: The specific steps of stirring, pouring the raw material powders into a stirring box respectively, adding distilled water into the stirring box according to a suitable water-to-material ratio, stirring and mixing the raw material powders and the distilled water to obtain a semi-dry material are: Pour fluorinated gypsum powder, fly ash powder, cement powder, carbon fiber powder and foaming agent powder into the mixing box in sequence; Add distilled water into the mixing box at a water-to-material ratio of 1:10, and stir and mix the fluorgypsum powder, the fly ash powder, the cement powder, the carbon fiber powder, the foaming agent powder and the distilled water; After stirring and mixing, the activator powder is added into the stirring box, and stirred and mixed again to obtain a semi-dry material.

4. The process for making building bricks using fluorinated gypsum as claimed in claim 1, characterized in that: The specific steps of molding, feeding the semi-dry material into a mold for pressing to obtain a molded brick are: After stirring and mixing, the obtained semi-dry material is allowed to stand for 2-5 hours, and then the semi-dry material is fed into a mold; The semi-dry material is pressed in the mold by mechanical pressure to obtain a formed brick.

5. The process for making building bricks using fluorinated gypsum as claimed in claim 1, characterized in that: The curing and drying are to properly cure the bricks to achieve a certain strength, and after curing, to dry the bricks to remove excess water in the bricks. The specific steps are: After the formed bricks are obtained, the bricks are transferred to a curing room, first watered for curing for 10-15 days, and then naturally cured for 28 days, so that the bricks reach a suitable strength; After curing, the green bricks are transferred to a drying chamber, where they are dried to remove excess moisture from the green bricks.

6. The process for making building bricks using fluorinated gypsum as claimed in claim 1, characterized in that: The inspection is to inspect the quality of the dried bricks to ensure that they meet the standards for building bricks, and after the inspection, the bricks that have passed the inspection are transferred to the storage room for unified storage. The specific steps are: After the bricks are dried, the bricks are transferred to a cooling chamber for cooling; After the bricks are cooled to room temperature, the bricks are transferred to an inspection room for quality inspection to ensure that the bricks meet the standards for building bricks; After the inspection, the brick blanks that have passed the inspection are transferred to a storage room, and the qualified brick blanks are stored uniformly.

7. A device for making building bricks using fluorinated gypsum, applied to the process for making building bricks using fluorinated gypsum as claimed in any one of claims 1 to 6, characterized in that: It includes a grinding box, a screen, a mixing box, a mold, a curing room, a drying room, a cooling room, an inspection room and a storage room, wherein the screen is arranged in the grinding box, and the grinding box, the mixing box, the mold, the curing room, the drying room, the cooling room, the inspection room and the storage room are placed on the ground in sequence from left to right.

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