阅读说明：本技术 一种采用镍冶炼炉渣制备免烧结人造合成板材的方法 (Method for preparing sintering-free artificial synthetic plate by adopting nickel smelting furnace slag ) 是由 李智 于 2021-07-16 设计创作，主要内容包括：本发明属于固废资源化利用技术领域,公开了一种采用镍冶炼炉渣制备免烧结人造合成板材的方法。将镍冶炼炉渣与细粒径颗粒填充料、液体填充剂及辅料经搅拌混合,制成混合料,然后置于模框中布料,形成板状结构,将模框内抽真空,在真空力和重锤拍击力的合力作用下相互运动填充压制形成板材,最后将压制后的板材进行固化、脱膜、冷却、定厚抛磨,得到所述人造合成板材。本发明采用大粒径镍冶炼炉渣与细粒径颗粒填充料及液体填充剂进行结合的方式,通过真空+振动的形式形成完全的材料实心体,所得人造合成板材具有良好的力学强度。本发明实现了镍冶炼炉渣的资源化回收利用,具有良好的环保效益和经济效益。(The invention belongs to the technical field of solid waste resource utilization, and discloses a method for preparing a sintering-free artificial synthetic plate by using nickel smelting furnace slag. Mixing nickel smelting furnace slag, fine-grained particle filling materials, liquid filling agents and auxiliary materials through stirring to prepare a mixture, then placing the mixture in a mold frame for distribution to form a plate-shaped structure, vacuumizing the mold frame, performing mutual movement under the action of the combined force of vacuum force and heavy hammer hitting force to fill and press the mixture to form a plate, and finally curing, demoulding, cooling and polishing the pressed plate to obtain the artificial synthetic plate. According to the invention, the mode of combining the large-particle-size nickel smelting furnace slag, the fine-particle-size particle filler and the liquid filler is adopted, a complete material solid is formed in a vacuum and vibration mode, and the obtained artificial synthetic plate has good mechanical strength. The invention realizes the resource recycling of the nickel smelting slag and has good environmental protection benefit and economic benefit.)

1. A method for preparing a sintering-free artificial synthetic plate by adopting nickel smelting slag is characterized by comprising the following preparation steps:

(1) stirring and mixing the nickel smelting furnace slag, the fine-grained particle filling material, the liquid filling agent and the auxiliary material to prepare a mixture;

(2) placing the mixture obtained in the step (1) in a mold frame for distributing to form a plate-shaped structure;

(3) vacuumizing the mold frame, and mutually moving, filling and pressing under the action of the resultant force of the vacuum force and the beating force of the heavy hammer to form a plate;

(4) and solidifying, demoulding, cooling and polishing and grinding the pressed board to obtain the artificial synthetic board.

2. The method for preparing the sintering-free artificial synthetic plate by using the nickel smelting slag as claimed in claim 1, wherein the method comprises the following steps: the particle size of the nickel smelting furnace slag in the step (1) is 0.1-10 mm, and the particle size of the fine particle size particle filler is 0.01-0.1 mm.

3. The method for preparing the sintering-free artificial synthetic plate by using the nickel smelting slag as claimed in claim 1, wherein the method comprises the following steps: the fine-particle-size particle filler in the step (1) is at least one of clay, fly ash, cement, ceramic powder and glass powder.

4. The method for preparing the sintering-free artificial synthetic plate by using the nickel smelting slag as claimed in claim 1, wherein the method comprises the following steps: in the step (1), the liquid filler is at least one selected from unsaturated resin, acrylic resin, epoxy resin and soybean oil-based resin.

5. The method for preparing the sintering-free artificial synthetic plate by using the nickel smelting slag as claimed in claim 1, wherein the method comprises the following steps: in the step (1), the auxiliary material is at least one of pigment and defoaming agent, the pigment is preferably inorganic pigment, and the defoaming agent is organic silicon defoaming agent.

6. The method for preparing the sintering-free artificial synthetic plate by using the nickel smelting slag as claimed in claim 1, wherein the method comprises the following steps: and (2) adding 2-6% by mass of modified polycarboxylate as a dispersing agent into the mixture in the step (1).

7. The method for preparing the sintering-free artificial synthetic plate by using the nickel smelting slag as claimed in claim 1, wherein the method comprises the following steps: the weight ratio of the nickel smelting furnace slag, the fine-grained particle filler and the liquid filler in the step (1) is (1-3): 1.

8. The method for preparing the sintering-free artificial synthetic plate by using the nickel smelting slag as claimed in claim 1, wherein the method comprises the following steps: vacuumizing in the step (3) until the vacuum degree reaches more than-96 kPa, wherein the vacuumizing time is 0.5-2 min; the heavy hammer slapping is to adopt a heavy hammer with the vibration frequency of 30-60 Hz to vibrate and slap for 2-4 min.

9. The method for preparing the sintering-free artificial synthetic plate by using the nickel smelting slag as claimed in claim 1, wherein the method comprises the following steps: the curing in the step (4) is curing at the temperature of 60-120 ℃ for 20-80 min.

10. An artificial synthetic panel, characterized in that: prepared by the method of any one of claims 1 to 9.

Technical Field

The invention belongs to the technical field of solid waste resource utilization, and particularly relates to a method for preparing a sintering-free artificial synthetic plate by using nickel smelting furnace slag.

Background

In the smelting production of non-ferrous metals, a large amount of smelting furnace slag and ore dressing tailings are generated. The smelting slag is treated by a stockpiling method, and the stockpiled smelting slag contains metals such as iron, nickel, copper, cobalt and the like, so that the method has high recovery value. At present, the nickel smelting furnace slag is generally treated by adopting a stockpiling method, is not fully utilized, occupies a large area, seriously pollutes the surrounding environment and wastes a large amount of resources. If the nickel smelting furnace slag can be treated and reused, the environment can be improved, a large amount of resources can be saved, and the economic benefit can be improved.

Natural stone is an important part of building materials, and has been widely used since ancient times because of its diversified colors and easy development. However, the mining of natural stones is gradually restricted due to the excessive increase of the mining amount, the low mining utilization rate, and the like, and particularly, the mining of natural stones is prohibited in european countries. Moreover, the products in each mining area have unique colors and varieties, thereby increasing the difficulty in use. People are always looking for alternatives. With the development of economy, building decorative materials are changing day by day, and synthetic plates are greatly developed as a novel decorative material.

Patent CN 110156399A discloses a manufacturing process of an epoxy resin composite artificial stone plate with excellent performance and low cost, which comprises the following steps: epoxy resin mortar was spread into a mold composed of a cement-based board, and then the mold was sent to a vibration table installed in a vacuum box. The mould with the epoxy resin mortar is vibrated in vacuum, when air wrapped in the mortar is pumped out, the vibration promotes the epoxy resin mortar to be dense, so that the epoxy resin mortar can be directly compounded with the cement-based base plate, and after curing, the composite artificial stone plate with the surface layer being epoxy resin-aggregate concrete with excellent performance and the bottom layer being low-cost cement-based is obtained. However, the patent adopts a mode that the epoxy resin and the cement-based base plate are arranged in a layered mode, good mixing of the epoxy resin and the cement-based aggregate is not realized, and resource utilization of the nickel smelting slag is not realized.

Disclosure of Invention

Aiming at the defects and shortcomings of the prior art, the invention mainly aims to provide a method for preparing a sintering-free artificial synthetic plate by adopting nickel smelting furnace slag.

Another object of the present invention is to provide an artificial synthetic panel prepared by the above method.

The artificial synthetic board comprises granular aggregates with different grain diameters and filling unit bodies with reference volumes, wherein the filling unit bodies are prepared by solidifying fine-grain solid granular filling materials and liquid filling agents, the surfaces of the solid granular filling materials are provided with flexible liquid filling films formed by filling the liquid filling agents, the granular aggregates with the grain diameters are mutually filled and attached, and gaps among the granular aggregates are filled with the filling unit bodies, so that the nickel smelting slag sintering-free artificial synthetic board is formed.

The purpose of the invention is realized by the following technical scheme:

a method for preparing a sintering-free artificial synthetic plate by adopting nickel smelting slag comprises the following preparation steps:

(1) stirring and mixing the nickel smelting furnace slag, the fine-grained particle filling material, the liquid filling agent and the auxiliary material to prepare a mixture;

(2) placing the mixture obtained in the step (1) in a mold frame for distributing to form a plate-shaped structure;

(3) vacuumizing the mold frame, and mutually moving, filling and pressing under the action of the resultant force of the vacuum force and the beating force of the heavy hammer to form a plate;

(4) and solidifying, demoulding, cooling and polishing and grinding the pressed board to obtain the artificial synthetic board.

Further, the particle size of the nickel smelting furnace slag in the step (1) is 0.1-10 mm, and the particle size of the fine particle size particle filler is 0.01-0.1 mm.

Further, the fine-particle-size filler in the step (1) is at least one of clay, fly ash, cement, ceramic powder and glass powder.

Further, the liquid filler in step (1) is at least one selected from unsaturated resin, acrylic resin, epoxy resin and soybean oil-based resin.

Further, the auxiliary material in the step (1) is at least one of pigment and defoaming agent. The pigment is preferably an inorganic pigment and the defoamer is preferably a silicone defoamer.

Further, 2-6% by mass of modified polycarboxylate is added into the mixture in the step (1) as a dispersing agent.

Further, the weight ratio of the nickel smelting furnace slag, the fine particle size filler and the liquid filler in the step (1) is (1-3): 1.

Further, in the step (3), the vacuum degree is vacuumized to be more than-96 kPa, and the vacuum time is 0.5-2 min.

Furthermore, the heavy hammer slapping in the step (3) is to adopt a heavy hammer with a vibration frequency of 30-60 Hz to vibrate and slap for 2-4 min.

Further, the curing in the step (4) is curing at a temperature of 60-120 ℃ for 20-80 min.

An artificial synthetic sheet material is prepared by the method.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention adopts a brand new preparation process, the fine-particle-size filler is filled into the gaps of the large-particle-size nickel smelting slag, the gaps of the fine-particle-size filler are filled with the liquid filler, all the gaps are filled as much as possible by utilizing the mutual filling among the large particles and the small particles, the air in the gaps among the particle aggregates is discharged in a vacuum and vibration mode to form complete material solids, and finally the liquid filler is solidified to obtain the high-strength artificial synthetic plate.

(2) The invention further adopts the modified polycarboxylate as the dispersant of the system, can promote the dispersed filling of the fine-particle-size particle filler, and promote the wrapping and filling of the liquid filler on the fine-particle-size particle filler, and can further improve the mechanical strength of the obtained artificial synthetic board.

(3) The invention realizes the resource recycling of the nickel smelting slag and has good environmental protection benefit and economic benefit.

Drawings

Fig. 1 is a schematic structural view of an artificial synthetic sheet according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.

Example 1

The structure schematic diagram of the artificial synthetic board prepared from nickel smelting slag in the embodiment is shown in fig. 1, and the artificial synthetic board comprises nickel smelting slag particle aggregates 1 with large particle size and fine particle fillers 2 with small particle size, wherein the fine particle fillers 2 are filled in gaps of the nickel smelting slag particle aggregates 1 with large particle size, and gaps of the fine particle fillers 2 are filled with liquid fillers 3. The nickel smelting slag particle aggregate 1 with large particle size, the fine particle filler 2 and the liquid filler 3 are mutually filled and attached to form a solid material.

The synthetic panel of this example was prepared by the following method:

(1) crushing 20 parts by mass of nickel smelting furnace slag to about 4mm in average particle size, and then stirring and mixing with 20 parts by mass of fine particle size filler (10 parts by mass of clay and 10 parts by mass of ceramic powder, the average particle size being about 0.05 mm), 10 parts by mass of liquid epoxy resin and a proper amount of inorganic pigment at high speed to prepare a mixture;

(2) placing the mixture obtained in the step (1) in a mold frame for distributing to form a plate-shaped structure;

(3) covering the mold frame, vacuumizing the process cavity in the mold frame for 1min until the vacuum degree reaches above-96 kPa, filling the mold frame and the process cavity in a mutual motion manner under the combined action of a vacuum force and a high-frequency heavy hammer beating force, wherein the vibration frequency is 50Hz, the vibration time is 3min, and pressing to form a plate;

(4) and curing the pressed plate at the medium temperature of 95-100 ℃ for 60min, demoulding, cooling, and polishing and grinding to a fixed thickness to obtain the artificial synthetic plate.

Example 2

The structure of the artificial synthetic plate prepared from nickel smelting slag without sintering in this embodiment is schematically shown in fig. 1, and the artificial synthetic plate prepared by the following method:

(1) crushing 10 parts by mass of nickel smelting furnace slag to an average particle size of about 4mm, and then mixing with 30 parts by mass of fine particle size filler (10 parts by mass of fly ash, 10 parts by mass of cement and 10 parts by mass of glass powder, the average particle size being about 0.05 mm), 10 parts by mass of liquid unsaturated resin and a proper amount of inorganic pigment through high-speed stirring to prepare a mixture;

(2) placing the mixture obtained in the step (1) in a mold frame for distributing to form a plate-shaped structure;

(3) covering the mold frame, vacuumizing the process cavity in the mold frame for 1min until the vacuum degree reaches above-96 kPa, filling the mold frame and the process cavity in a mutual motion manner under the combined action of a vacuum force and a high-frequency heavy hammer beating force, wherein the vibration frequency is 40Hz, the vibration time is 4min, and pressing to form a plate;

(4) and curing the pressed plate at the medium temperature of 100-105 ℃ for 30min, demoulding, cooling, and polishing and grinding to a fixed thickness to obtain the artificial synthetic plate.

Example 3

The structure of the artificial synthetic plate prepared from nickel smelting slag without sintering in this embodiment is schematically shown in fig. 1, and the artificial synthetic plate prepared by the following method:

(1) crushing 30 parts by mass of nickel smelting furnace slag to about 4mm in average particle size, and then mixing with 10 parts by mass of fine particle size filler (5 parts by mass of fly ash and 5 parts by mass of glass powder, the average particle size being about 0.05 mm), 10 parts by mass of liquid acrylic resin and a proper amount of inorganic pigment through high-speed stirring to prepare a mixture;

(2) placing the mixture obtained in the step (1) in a mold frame for distributing to form a plate-shaped structure;

(3) covering the mold frame, vacuumizing the process cavity in the mold frame for 2min until the vacuum degree reaches above-96 kPa, filling the mold frame and the process cavity in a mutual motion manner under the combined action of a vacuum force and a high-frequency heavy hammer beating force, wherein the vibration frequency is 30Hz, the vibration time is 4min, and pressing to form a plate;

(4) and curing the pressed plate at the medium temperature of 95-100 ℃ for 80min, demoulding, cooling, and polishing and grinding to a fixed thickness to obtain the artificial synthetic plate.

Example 4

In the present example, compared with example 1, in the step (1), a modified polycarboxylate (commercially available) is added as a dispersant in an amount of 3% by mass of the mixture in the same manner as in example 1.

The artificial synthetic sheets obtained in examples 1 to 4 were tested for strength (bending strength and compressive strength) according to JC/T908-2013 standard, and compared with artificial quartz stone sheets (commercial products prepared by pressing and curing natural quartz, pigments and resins), the results are shown in Table 1 below.

TABLE 1

	Flexural Strength/MPa	Compressive strength/MPa
			Example 1	22.7	139
Example 2	20.1	145
			Example 3	18.4	127
Example 4	28.4	140
			Artificial quartz stone	28.1	139

The results in table 1 show that the large-particle-size particle aggregate of the nickel smelting slag and the fine-particle-size particle filler are combined, gaps of the fine-particle-size particle filler are filled with the liquid filler, air in the gaps between the particle aggregates is discharged in a vacuum and vibration mode by utilizing the mutual filling between the large particles and the small particles, so that complete material solids are formed, and the obtained artificial synthetic plate has good mechanical strength and meets the application requirements of common use scenes on the artificial plate. And by further adopting the modified polycarboxylate as the dispersant of the system, the mechanical strength of the obtained artificial synthetic plate reaches the performance of the existing commercial artificial quartz stone plate, and the artificial quartz stone plate has a good application prospect.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.