阅读说明：本技术 一种新型矿棉多层加工制备方法 (Novel mineral wool multilayer processing preparation method ) 是由 张世鹏 黎天飞 张宝鹏 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种新型矿棉多层加工制备方法,属于多层矿棉制备领域,一种新型矿棉多层加工制备方法,在材料准备阶段利用稀盐酸实现对调质剂进行酸洗,洗去调质剂内不溶用酸的物质,同时稀盐酸还可以增加调质剂的酸度,增加后续调质的效率,而在调质的过程中,通过液态高炉熔渣实现对调质剂酸洗液的干馏和酸洗,节约对调质剂酸洗液加热的能量,减少矿棉限位生产过程的能源消耗,在后续气流粉碎的环节中,利用紊乱的高压气流对液态高炉熔渣进行吹丝,制得均匀的矿棉纤维,避免高压气流在吹丝的过程中吹断矿棉纤维,易于制得长矿棉纤维,同时大幅提高矿棉限位的品质,增加其的加工性能,方便后续的加工。(The invention discloses a novel mineral wool multilayer processing preparation method, belonging to the field of multilayer mineral wool preparation, the novel mineral wool multilayer processing preparation method comprises the steps of utilizing dilute hydrochloric acid to realize acid cleaning of a conditioner in the material preparation stage, washing off substances insoluble in the conditioner and using acid, simultaneously utilizing the dilute hydrochloric acid to increase the acidity of the conditioner and increase the efficiency of subsequent conditioning, realizing dry distillation and acid cleaning of a conditioner pickling solution through liquid blast furnace slag in the conditioning process, saving the energy for heating the conditioner pickling solution, reducing the energy consumption in the mineral wool limiting production process, utilizing turbulent high-pressure airflow to blow silk to the liquid blast furnace slag in the subsequent airflow crushing link to prepare uniform mineral wool fibers, avoiding blowing off the mineral wool fibers by the high-pressure airflow in the silk blowing process, easily preparing long mineral wool fibers and greatly improving the quality of mineral wool limiting, the processing performance of the composite material is improved, and the subsequent processing is facilitated.)

1. The novel mineral wool multilayer processing preparation method is characterized by comprising the following steps:

s1, crushing a modifier, namely crushing coal ore powder and iron tailing waste stone serving as a modulator, and mixing the coal ore powder and the iron tailing waste stone powder according to the mass ratio of 3: 2;

s2, pickling with a modifier, pouring the mixed modifier powder into dilute hydrochloric acid for pickling, and filtering out trace insoluble substances to obtain modifier pickling solution;

s3, quenching and tempering blast furnace slag, namely performing dry distillation on the quenching and tempering agent pickling solution obtained in the S2 quenching and tempering agent pickling by using the blast furnace slag, preheating the blast furnace slag, putting the preheated quenching and tempering agent into liquid blast furnace slag, adjusting the overall pH of the blast furnace slag to 4-6 by using the quenching and tempering agent, and performing heat preservation;

s4, carrying out gas quenching on the liquid blast furnace slag subjected to quenching and tempering and heat preservation by using air sprayed by an air nozzle, so that the temperature of the liquid blast furnace slag is slightly reduced;

s5, performing jet milling, transferring the liquid blast furnace slag subjected to gas quenching granulation from the electric arc furnace into a slag bath, and blowing the liquid blast furnace slag into filaments by using a high-pressure energy-carrying nozzle in the slag bath to prepare mineral wool fibers;

s6, cooling the mineral wool fibers, and cooling the primarily formed mineral wool fibers in a cooling chamber to completely cool the mineral wool fibers;

s7, preparing multilayer mineral wool, namely preparing the multilayer mineral wool by using the prepared mineral wool fiber to obtain a multilayer mineral wool product.

2. The novel mineral wool multilayer processing preparation method according to claim 1, characterized in that: and in the S1 and the crushing of the modifying agent, the coal mineral powder and the iron tailing waste stone are simply crushed and crushed into small blocks with the particle size of less than 30 CM.

3. The novel mineral wool multilayer processing preparation method according to claim 1, characterized in that: in the S2 and the quenching and tempering agent pickling, the diluted hydrochloric acid is excessive.

4. The novel mineral wool multilayer processing preparation method according to claim 1, characterized in that: in the step S3 of tempering the blast furnace slag, the tempering agent acid wash may be dry distilled and preheated by using heat of the liquid blast furnace slag.

5. The novel mineral wool multilayer processing preparation method according to claim 1, characterized in that: in the S4 gas quenching granulation, the gas component for gas quenching is nitrogen, and the nitrogen is normal temperature.

6. The novel mineral wool multilayer processing preparation method according to claim 1, characterized in that: the high-pressure energy-carrying nozzle in the S5 jet milling comprises a high-pressure energy-carrying nozzle body (1), a separation net (2) matched with the high-pressure energy-carrying nozzle body (1) is fixedly connected to the spray opening of the high-pressure energy-carrying nozzle body, and a plurality of groups of spoilers (3) are fixedly connected to one end, far away from the spray opening of the high-pressure energy-carrying nozzle body (1), of the separation net (2).

7. The method for preparing mineral wool by multilayer processing according to claim 6, wherein: the spoiler (3) comprises a fixing rod (301), the fixing rod (301) is fixedly connected with a separation net (2), an upper cover (302) is sleeved on the fixing rod (301), one end of the fixing rod (301) far away from the separation net (2) is fixedly connected with a limiting plate (303), the limiting plate (303) is located in the upper cover (302), a compression spring (304) is fixedly connected between the limiting plate (303) and the upper cover (302), the compression spring (304) is sleeved outside the fixing rod (301), a wear-resistant ring (305) is connected between the fixing rod (301) and the upper cover (302), and the wear-resistant ring (305) is fixedly connected with the upper cover (302).

8. The method for preparing mineral wool by multilayer processing according to claim 7, wherein: the upper shield (302) comprises a turbulence shield (4), an air inlet (5) is formed in one end, far away from the separation net (2), of the turbulence shield (4), and a pair of air inlets and an air outlet (6) are formed in the side wall of the turbulence shield (4).

9. The method for preparing mineral wool by multilayer processing according to claim 8, wherein: the air inlet (5) is in an inverted trapezoid shape.

10. The novel mineral wool multilayer processing preparation method according to claim 1, characterized in that: and in the cooling of the S6 mineral wool fibers, room-temperature nitrogen is continuously introduced into the cooling chamber as protective gas.

Technical Field

The invention relates to the field of multilayer mineral wool preparation, in particular to a novel multilayer mineral wool processing preparation method.

Background

Mineral wool is a short cotton-shaped fiber product made from silicate melts, has the excellent characteristics of light weight, durability, non-combustibility, non-decay, no moth-eating and the like, is an excellent heat insulation and sound absorption material, comprises mineral wool, rock wool, glass wool, ceramic fiber and the like, is obtained from the mouths of volcanoes in Hawaii at the earliest, is also called 'Fall' hair, and is called as the mineral wool by taking metallurgical slag or fly ash as a main raw material; rock wool is called rock wool by using rocks such as basalt as main raw materials.

Fly ash is fine ash collected from flue gas generated after coal combustion, and is main solid waste discharged from coal-fired power plants. Wherein the main oxide composition of the fly ash of the thermal power plant is as follows: SiO2, Al2O3, FeO, Fe2O3, CaO, TiO2 and the like, along with the development of the power industry, the emission amount of fly ash of a coal-fired power plant is increased year by year, and the fly ash becomes one of industrial waste residues with larger emission amount at present.

The gas quenching is to fill high-purity inert gas (Ar) or inert gas (N) in a cooling chamber for rapid cooling. The quenching medium is gas, and is suitable for gas quenching of high-speed steel, high-carbon high-chromium steel and die steel. The vacuum gas quenching process is cleaner than the vacuum oil quenching process, and belongs to the green processing category.

The cupola method, which is the main preparation method of the mineral wool in the past, has low technical content and relatively simple working procedures, but the cupola method has very obvious defects in the production process: a large amount of smoke and dust generated in the production process pollute the environment; the cold blast furnace slag is adopted for feeding, fuel is required to be remelted, and about 400kg of coke is consumed for producing 1t of mineral wool, so that the energy consumption and the production cost are increased; the produced mineral wool product has high slag ball content, thick fiber and poor hand feeling.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a novel mineral wool multilayer processing preparation method, which can improve the preparation method of mineral wool, greatly reduce smoke and dust generated in the production process of the mineral wool, greatly reduce environmental pollution, simultaneously reduce energy consumption and generation cost in the production process of the mineral wool, and greatly improve the quality of the produced mineral wool.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A novel mineral wool multilayer processing preparation method comprises the following steps:

s1, crushing a modifier, namely crushing coal ore powder and iron tailing waste stone serving as a modulator, and mixing the coal ore powder and the iron tailing waste stone powder according to the mass ratio of 3: 2;

s2, pickling with a modifier, pouring the mixed modifier powder into dilute hydrochloric acid for pickling, and filtering out trace insoluble substances to obtain modifier pickling solution;

s3, quenching and tempering blast furnace slag, namely performing dry distillation on the quenching and tempering agent pickling solution obtained in the S2 quenching and tempering agent pickling by using the blast furnace slag, preheating the blast furnace slag, putting the preheated quenching and tempering agent into liquid blast furnace slag, adjusting the overall pH of the blast furnace slag to 4-6 by using the quenching and tempering agent, and performing heat preservation;

s4, carrying out gas quenching on the liquid blast furnace slag subjected to quenching and tempering and heat preservation by using air sprayed by an air nozzle, so that the temperature of the liquid blast furnace slag is slightly reduced;

s5, performing jet milling, transferring the liquid blast furnace slag subjected to gas quenching granulation from the electric arc furnace into a slag bath, and blowing the liquid blast furnace slag into filaments by using a high-pressure energy-carrying nozzle in the slag bath to prepare mineral wool fibers;

s6, cooling the mineral wool fibers, and cooling the primarily formed mineral wool fibers in a cooling chamber to completely cool the mineral wool fibers;

s7, preparing multilayer mineral wool, namely preparing the multilayer mineral wool by using the prepared mineral wool fiber to obtain a multilayer mineral wool product.

Can realize the improvement of the preparation method of the mineral wool, greatly reduce the smoke and dust generated in the production process of the mineral wool, greatly reduce the environmental pollution, simultaneously reduce the energy consumption and the generation cost in the production process of the mineral wool, and greatly improve the produced mineral wool material

Furthermore, in the S1 grinding process of the conditioner, the coal mineral powder and the iron tailing waste stone are only needed to be simply ground, the coal mineral powder and the iron tailing waste stone are ground into small blocks with the particle size of 30CM, so that the subsequent acid washing and dissolution are facilitated, meanwhile, the small blocks with the particle size of 30CM can be completed by using a common grinder, the grinding cost is reduced, and the mineral wool preparation cost is reduced.

Furthermore, in the S2 acid pickling of the modifying agent, the dilute hydrochloric acid is excessive, so that the modifying agent can be completely dissolved, and the dissolved solution is acidic.

Further, in S3, blast furnace slag quenching and tempering, the heat of liquid blast furnace slag can be utilized to dry distill and preheat the quenching and tempering agent pickling solution, when the supercooled quenching and tempering agent pickling solution is prevented from being added into the liquid blast furnace slag, partial liquid blast furnace slag is not easy to supercool and phase change occurs, the product phase of mineral wool limiting preparation is not easy to cause influence, the heat of the liquid blast furnace slag is utilized to dry distill and preheat the quenching and tempering agent pickling solution, the energy of dry distill and preheating can be greatly saved, and the manufacturing cost is reduced.

Further, in the S4 gas quenching granulation, the gas component for gas quenching is nitrogen, the nitrogen is at normal temperature, the nitrogen is an inert gas, the liquid blast furnace slag is not easy to react, and the gas component can be used as a shielding gas to protect the liquid blast furnace slag.

Furthermore, the high-pressure energy-carrying nozzle in the S5 jet milling comprises a high-pressure energy-carrying nozzle main body, a separation net matched with the high-pressure energy-carrying nozzle main body is fixedly connected to the jet orifice of the high-pressure energy-carrying nozzle main body, a plurality of groups of spoilers are fixedly connected to one end, away from the jet orifice of the high-pressure energy-carrying nozzle main body, of the separation net, and the spoilers are used for disturbing airflow, so that the high-pressure energy-carrying nozzle ejects disordered airflow, and the mineral wool fiber drawing effect is

Further, the spoiler comprises a fixed rod, the fixed rod is fixedly connected with the separation net, an upper cover is sleeved on the fixed rod, a limiting plate is fixedly connected to one end, away from the separation net, of the fixed rod, the limiting plate is located in the upper cover, a compression spring is fixedly connected between the limiting plate and the upper cover, the compression spring is sleeved on the outer side of the fixed rod, a wear-resisting ring is connected between the fixed rod and the upper cover and fixedly connected with the upper cover, and the upper cover moves back and forth along the fixed rod under the action of the compression spring and high-pressure air flow to disturb the air flow.

Furthermore, the upper shield includes the vortex cover, the vortex cover is kept away from the one end of spacer screen and is dug there is the air intake, dig on the lateral wall of vortex cover have a pair ofly with the air outlet, the air current gets into in the upper shield by the air intake to spout from the air outlet, make the air current become the disorder.

Furthermore, the air inlet is in an inverted trapezoid shape, so that air can be conveniently fed into the air inlet.

Furthermore, in the cooling of the S6 mineral wool fiber, room-temperature nitrogen gas is required to be continuously introduced into the cooling chamber as protective gas, and the nitrogen gas can protect the mineral wool fiber while assisting in cooling, so that the mineral wool fiber is not easy to deteriorate at high temperature.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

according to the scheme, dilute hydrochloric acid is used for pickling the conditioner in the material preparation stage, insoluble acid substances in the conditioner are washed, meanwhile, the dilute hydrochloric acid can also increase the acidity of the conditioner and increase the efficiency of subsequent conditioning, in the conditioning process, dry distillation and pickling of the conditioner pickling solution are realized through liquid blast furnace slag, the heating energy of the conditioner pickling solution is saved, the energy consumption in the mineral wool limiting production process is reduced, in the subsequent airflow crushing link, turbulent high-pressure airflow is used for blowing the liquid blast furnace slag to prepare uniform mineral wool fibers, the mineral wool fibers are prevented from being blown off by the high-pressure airflow in the wire blowing process, long mineral wool fibers are easily prepared, meanwhile, the quality of mineral wool limiting is greatly improved, the processability of the mineral wool is improved, and the subsequent processing is facilitated.

Drawings

FIG. 1 is a principal flow diagram of the present invention;

FIG. 2 is a schematic structural diagram of the high-pressure energy-carrying nozzle of the present invention;

FIG. 3 is a front cross-sectional view of a spoiler in accordance with the present invention;

FIG. 4 is a schematic structural diagram of a spoiler cover according to the present invention.

The reference numbers in the figures illustrate:

the high-pressure energy-carrying nozzle comprises a high-pressure energy-carrying nozzle body 1, a separation net 2, a spoiler 3, a fixed rod 301, an upper cover 302, a limiting plate 303, a compression spring 304, a wear-resistant ring 305, a spoiler cover 4, an air inlet 5 and an air outlet 6.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.