A production system for refractory bricks

Abstract

The invention relates to the technical field of refractory brick production, and discloses a refractory brick production and manufacturing system, comprising: a clinker module, a binder module, and a preparation module; the clinker module reacts with raw materials to produce a bonding effect between particles to form clinker; the binder module screens and modulates the binder raw materials to obtain the binder, so that the refractory bricks are easy to shape during the preparation process; the preparation module prepares and sinters the mixed raw materials to obtain the refractory brick finished product. In the present invention, calcined refractory high-aluminum clinker is used as a base material, and a certain proportion of binder is added to make a mixed aggregate, the proportion of clinker in the mixed raw materials exceeds 60%, which is called a multi-plastic product. The multi-plastic product has good volume stability, a small high-temperature line change rate, and other high-temperature properties are better than those of raw material products.

Description

Technical Field

[0001] The invention relates to the technical field of refractory brick production, in particular to a production and manufacturing system for refractory bricks. Background Art

[0002] Now refractory bricks have been widely used in our lives, and its production process is also very complicated. The refractory brick production process consists of raw material selection, high-temperature calcination, sorting and grading, crushing and grinding, scientific batching, mixing, material confinement, strong restraint molding, static drying, high-temperature firing, kiln inspection and packaging, loading and delivery, etc. From the existing technology, the production yield of refractory bricks is low, and it is easy to deform and crack. For this reason, we propose a production system for refractory bricks. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a production system for refractory bricks, which has the advantages of no deformation, no cracking and high yield rate.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A production and manufacturing system for refractory bricks, comprising: a clinker module, a binder module, and a preparation module;

[0005] Clinker module: reacts to raw materials, causing bonding between particles to form clinker;

[0006] Binder module: By screening and modulating the binder raw materials, the binder is obtained, making it easier for refractory bricks to be formed during the preparation process;

[0007] Preparation module: prepare and sinter the mixed raw materials to obtain finished refractory bricks.

[0008] In one example, the method for preparing the module comprises the following steps:

[0009] S1. Raw material preparation, the main raw materials include kaolin, coal powder and limestone;

[0010] S2, crushing and grinding, the raw materials are crushed and ground by crushers and mills;

[0011] S3, mixing ingredients, the crushed and ground raw materials are mixed together in a certain ratio;

[0012] S4, firing reaction, the mixed material is calcined at high temperature in a firing furnace to undergo aging and mineralization reactions;

[0013] S5, cooling treatment, the fired clinker needs to be cooled to reduce its temperature.

[0014] In one example, in S1, kaolin is an ore rich in alumina, coal powder is a fuel that provides heat energy required for combustion, and limestone is an auxiliary raw material for adjusting ore composition and ore melting temperature.

[0015] In one example, in S4, the ore in the mixture undergoes a mineralization reaction to produce a liquid phase and a gas phase. The occurrence of the mineralization reaction causes a bonding effect between the ore particles to form a clinker structure.

[0016] In one example, the method for preparing the binder module includes the following steps:

[0017] S6. Prepare materials, wherein the binder raw material is composed of clay;

[0018] S7, crushing and grinding, crushing the raw clay block, grinding and sieving after crushing to obtain a powdered raw material;

[0019] S8. Add stirring, add appropriate amount of water to the screened raw material powder and stir to prepare the slurry to obtain a soft binder raw material.

[0020] In one example, the preparation method of the preparation module includes the following steps:

[0021] S9, raw material preparation, clinker and binder obtained in the clinker module and binder module;

[0022] S10, mixing and stirring, mixing and stirring the clinker and the binder in a certain proportion to obtain a mixture;

[0023] S11, forming and drying, the mixture is semi-dry pressed to form bricks, the bricks contain moisture, and are dried and air-dried by hot air;

[0024] S12, sintering the bricks. The air-dried bricks are sent into a kiln for sintering, so that the bricks react with the liquid phase and mullite;

[0025] S13, heat preservation and cooling, after sintering is completed, heat preservation is performed and the formed bricks are slowly cooled.

[0026] In one example, the clinker ratio of the S9 type is greater than 60%, and the binder ratio is 5%-10%.

[0027] In one example, the moisture content of the bricks after forming and drying in S11 is less than 2%.

[0028] In one example, in S12, the sintering temperature is 1350-1450°C.

[0029] In one example, the insulation time of the insulation cooling in S13 is 30-40 hours, and natural cooling is performed after the insulation.

[0030] Beneficial effects:

[0031] 1. In the present invention, calcined refractory high-alumina clinker is used as the base material, and a certain proportion of binder is added to make a mixed aggregate. The proportion of clinker in the mixed raw materials exceeds 60%, which is called a multi-plastic product. The multi-plastic product has good volume stability, a small high-temperature linear change rate, and other high-temperature properties are better than those of raw material products.

[0032] 2. In the present invention, semi-dry pressing is adopted for forming. The semi-dry pressing blank has low water content and hardly shrinks when the water evaporates. It can be dried quickly and can be directly loaded into the kiln. After the semi-dry pressing is adopted for forming, it is dried to ensure that the water content of the brick blank is low while preventing the brick blank from deformation and cracking and having a certain strength.

[0033] 3. In the present invention, in order to increase the yield of finished bricks, a 30-40 hour heat preservation treatment is used after sintering to prevent the recrystallization of mullite, so that the sintering process and various physical and chemical changes of the bricks tend to be stable, and then cooling is performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a process flow of a refractory brick production system according to the present invention;

[0035] Figure 2 It is a schematic diagram of the process of a clinker module in a production system for refractory bricks of the present invention;

[0036] Figure 3 It is a schematic flow chart of a binder module in a production system for refractory bricks of the present invention;

[0037] Figure 4 The present invention is a schematic diagram of the process of preparing a module in a production system for refractory bricks. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-4 , a refractory brick production and manufacturing system, comprising: a clinker module, a binder module, and a preparation module;

[0040] Clinker module: reacts to raw materials, causing bonding between particles to form clinker;

[0041] Binder module: By screening and modulating the binder raw materials, the binder is obtained, making it easier for refractory bricks to be formed during the preparation process;

[0042] Preparation module: prepare and sinter the mixed raw materials to obtain finished refractory bricks.

[0043] The preparation method of the material module comprises the following steps:

[0044] S1. Raw material preparation, the main raw materials include kaolin, coal powder and limestone;

[0045] S2, crushing and grinding, the raw materials are crushed and ground by crushers and mills;

[0046] S3, mixing ingredients, the crushed and ground raw materials are mixed together in a certain ratio;

[0047] S4, firing reaction, the mixed material is calcined at high temperature in a firing furnace to undergo aging and mineralization reactions;

[0048] S5, cooling treatment, the fired clinker needs to be cooled to reduce its temperature.

[0049] Among them, in S1, kaolin is an ore rich in alumina, coal powder is a fuel that provides the heat energy required for combustion, and limestone is an auxiliary raw material for adjusting the ore composition and the ore melting temperature.

[0050] In S4, the ore in the mixture undergoes a mineralization reaction to produce a liquid phase and a gas phase. The mineralization reaction causes a bonding effect between the ore particles to form a clinker structure.

[0051] Among them, the calcined refractory high-alumina clinker is used as the base material, and a certain proportion of binder is added to make a mixed aggregate, and the proportion of clinker in the mixed raw materials exceeds 60%, which is called a multi-plastic product. The multi-plastic product has good volume stability and a small high-temperature linear change rate, and its high-temperature performance is better than that of raw material products.

[0052] The preparation method of the binder module comprises the following steps:

[0053] S6. Prepare materials, wherein the binder raw material is composed of clay;

[0054] S7, crushing and grinding, crushing the raw clay block, grinding and sieving after crushing to obtain a powdered raw material;

[0055] S8. Add stirring, add appropriate amount of water to the screened raw material powder and stir to prepare the slurry to obtain a soft binder raw material.

[0056] The preparation method of the preparation module comprises the following steps:

[0057] S9, raw material preparation, clinker and binder obtained in the clinker module and binder module;

[0058] S10, mixing and stirring, mixing and stirring the clinker and the binder in a certain proportion to obtain a mixture;

[0059] S11, forming and drying, the mixture is formed into brick blanks by semi-dry pressing, the brick blanks contain water, and are dried and air-dried by hot air; the semi-dry pressing method is used for forming, the semi-dry pressing blanks have low water content, and almost no shrinkage occurs when the water evaporates, and can be dried quickly, and can be directly loaded into the kiln. After the semi-dry pressing method is used for forming, the brick blanks are dried to ensure that the water content of the brick blanks is low, and the brick blanks do not deform or crack, and have a certain strength;

[0060] S12, sintering the bricks. The air-dried bricks are sent into a kiln for sintering, so that the bricks react with the liquid phase and mullite;

[0061] S13, heat preservation and cooling, after sintering is completed, heat preservation is performed and the formed bricks are slowly cooled.

[0062] Among them, the proportion of clinker in the S9 type is greater than 60%, and the proportion of binder is 5%-10%.

[0063] Wherein, the water content of the bricks after forming and drying in S11 is less than 2%.

[0064] Wherein, in said S12, the sintering temperature is 1350-1450°C;

[0065] Among them, the insulation time of the insulation cooling in S13 is 30-40 hours, and it is naturally cooled after insulation. In order to increase the output rate of finished bricks, 30-40 hours of insulation treatment is used after sintering to prevent the recrystallization of mullite, so that the sintering process and various physical and chemical changes of the brick blank tend to be stable, and then cooling is carried out.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production system for refractory bricks, characterized in that: include: Clinker module, binder module, preparation module; Clinker module: reacts to raw materials, causing bonding between particles to form clinker; Binder module: By screening and modulating the binder raw materials, the binder is obtained, making it easier for refractory bricks to be formed during the preparation process; Preparation module: prepare and sinter the mixed raw materials to obtain finished refractory bricks; The preparation method of the clinker module comprises the following steps: S1. Raw material preparation, the main raw materials include kaolin, coal powder and limestone; S2, crushing and grinding, the raw materials are crushed and ground by crushers and mills; S3, mixing ingredients, the crushed and ground raw materials are mixed together in a certain ratio; S4, firing reaction, the mixed material is calcined at high temperature in a firing furnace to undergo aging and mineralization reactions; S5, cooling treatment, the fired clinker needs to be cooled to reduce its temperature; The preparation method of the binder module comprises the following steps: S6. Prepare materials, wherein the binder raw material is composed of clay; S7, crushing and grinding, crushing the raw clay block, grinding and sieving after crushing to obtain a powdered raw material; S8, adding stirring, adding an appropriate amount of water to the screened raw material powder and stirring to prepare a slurry to obtain a soft binder raw material; The preparation method of the preparation module comprises the following steps: S9, raw material preparation, clinker and binder obtained in the clinker module and binder module; S10, mixing and stirring, mixing and stirring the clinker and the binder in a certain proportion to obtain a mixture; S11, forming and drying, the mixture is semi-dry pressed to form bricks, the bricks contain moisture, and are dried and air-dried by hot air; S12, sintering the bricks. The air-dried bricks are sent into a kiln for sintering, so that the bricks react with the liquid phase and mullite; S13, heat preservation and cooling, after sintering is completed, heat preservation is performed and the formed bricks are slowly cooled; The proportion of the binder in the S9 is 5%-10%; The clinker ratio in S9 is greater than 60%; The heat preservation and cooling in S13 is carried out for 30-40 hours, and then the heat preservation and cooling are carried out naturally.

2. A refractory brick production system according to claim 1, characterized in that: In S1, kaolin is an ore rich in alumina, coal powder is a fuel that provides heat energy required for combustion, and limestone is an auxiliary raw material for adjusting the ore composition and the ore melting temperature.

3. A refractory brick production system according to claim 1, characterized in that: In S4, the ore in the mixture undergoes a mineralization reaction to produce a liquid phase and a gas phase; the occurrence of the mineralization reaction causes a bonding effect between the ore particles to form a clinker structure.

4. A refractory brick production system according to claim 1, characterized in that: The moisture content of the bricks after forming and drying in S11 is less than 2%.

5. A refractory brick production system according to claim 1, characterized in that: In the step S12, the sintering temperature is 1350-1450°C.

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