The granules are in one millimeter. In addition to grinding, there are no other. The more the more, the better
don’t need to be so professional, it is best to be at home or laboratory.
The granules are in one millimeter. In addition to grinding, there are no other. The more the more, the better
don’t need to be so professional, it is best to be at home or laboratory.
The use of waste aluminum to produce aluminum powder is an important part of the regenerative aluminum industry. The use of waste aluminum to produce aluminum powder has certain requirements for waste aluminum. It is not that any waste aluminum can produce aluminum powder. It is required that the scrap aluminum is clearly classified and the pre -processing is clean. If the technology is appropriate, the aluminum powder that meets relevant standards can be produced. my country’s use of waste aluminum to produce aluminum powder is late. Related research is backward, which is not suitable for the needs of my country’s aluminum industry. Therefore, we should take the problem of producing aluminum powder carefully with scientific attitude to seek better processing technology and related equipment.
The use of waste aluminum to produce aluminum powder has many advantages. One is that the metal recovery rate is high, the other is high value, and the third is low cost. Essence However, it is worth mentioning that because most of the waste aluminum exists in alloy, the production of aluminum powder is ordinary aluminum powder, and the main purpose is iron alloy production, fireworks and firecrackers, steelmaking and coating that are not high. High -grade aluminum powder.
The waste aluminum recycling resources in my country are relatively broad, but the recovery prices in various regions are different, and it also floats with the price of raw aluminum ingots. However, the overall price difference is 3-4,000 yuan/ton than the raw aluminum ingot. Cold processing uses waste aluminum to produce aluminum powder to make full use of the advantages of the difference between waste aluminum and raw aluminum ingot.
The traditional aluminum powder production technology is a melting spray method, ball milling method, etc., but there is a problem. This is the problem of burning in the melting process of waste aluminum. At about 92%, the cost is also high. With the development of the industry, a new aluminum powder production technology has begun to be applied. This is the production of aluminum powder to produce aluminum powder in pure mechanical crushing method. The metal recovery rate is 100%, the actual recycling rate can reach 98%, and there is no pollution to the environment. This chapter will focus on
S Shao Mechanical Method to produce aluminum powder technology.
. The main purpose of aluminum powder
With the development of science and technology, people have put forward increasingly demanding requirements for the performance of materials. Nonferrous metals are modern defense, modern industry and cutting -edge science and technology
, as well as the indispensable important materials for people’s lives. Development has driven non -ferrous metals
is widely used in powder. A large number of aluminum powder is applied to metallurgy, aerospace, chemical, fireworks and other industries, and has a wide range of uses.
The aluminum powder can be divided into pure aluminum and aluminum alloy powder. Mainly as follows:
1, fine aluminum powder: The brand is LFT1, LFT2, and the accuracy is 0.07 ~ 0. The raw material is pure aluminum ingot.
The main purpose: mainly used for fuel promoted by the aerospace industry rocket, and also used for first -level raw materials military explosives.
2, ultra -fine aluminum powder: The brand is FLT1, FLT2, and the accuracy is 16 ~ 30V meters. The raw material is pure aluminum ingot.
The main purpose: for high -end cars, mobile phones, motorcycles, and bicycles for external metal paint raw materials.
3, steelmaking and aluminum powder: The brand is FLG1, FLG2, FLG3, and the particle size is 0.35 ~ 0. It can be produced by waste aluminum.
The main purpose: steelmaking and qi, dehydration.
4, fine aluminum powder: The brand is FLX1, FLX2, FLX3, FLX4, and the particle size is 0.35 ~ 0.
The main purpose: for chemical industry, fireworks and firecrackers, etc.
5, ball grinding aluminum powder: The brand is FLQ1, FLQ2, FLQ3, particle size 0.08 ~ 0.
The main purpose: for chemical, casting, fireworks
6, coating aluminum powder: mainly used for industrial anti -corrosion, rust -proof coating, producing fireworks and firecrackers. Using high -grade waste guide lines can produce ordinary coating aluminum powder.
7, aluminum and magnesium alloy powder: the number is: FLM1, FLM2
The main purpose: fireworks, firecrackers, military explosives
n8, fireworks aluminum magnesium powder, magnesium powder : FLMY1, FLMY2, FLMY3, FLMY4, particle size 0.16 ~ 0. It can be produced by waste aluminum.
The main purpose: Flood powder
. The requirements of the production of aluminum powder
According to the main raw materials of the general industrial aluminum powder according to national standards, aluminum ingots, aluminum magnesium alloys, etc.; The main raw materials during production are pure aluminum ingots, and then add 1#or 2#magnesium melting into alloy ingots, and then crushed into large particle size Powder and deep processing balls are grinded into specifications of aluminum powder.
The most basic requirements for the production of aluminum powder for cold processing methods are single ingredients. As long as the waste is not mixed with impurities, the waste aluminum is strictly prepared, and the quality of the cold processing aluminum powder will not be reduced. In order to improve the quality of aluminum powder, the waste aluminum should be strictly prepared before processing, split impurities, and clean oil. At present, the most commonly used raw materials are: waste and tibs, waste aluminum extrusion profiles (such as 6063 aluminum alloy waste), aluminum lines, aluminum -type corners, mechanical processing aluminum chips, etc. The above waste aluminum can be produced by mechanical methods to produce ordinary aluminum powder. Not only the product quality
is good, but also low processing costs, low investment, and fast results.
. The process of producing aluminum powder in cold processing method needs to pay attention to the problems of the equipment. When using this technology, pay attention to the following issues.
1. Meeting product quality and quantity requirements
This is the first principle of the design of the new project process. The cold processing of waste aluminum is difficult than ordinary metals. Good toughness, fast thermal conductivity coefficients
The characteristics, so it is difficult to process. In the process of process design and equipment development, it must overcome and find the corresponding methods in order to meet the product quality requirements and quantity requirements.
2, saving investment
The size of equipment investment directly affects the cost of new projects in the future. Waste aluminum regeneration is a small profit -making industry, so it is necessary to reduce costs to obtain
better profits. Therefore, in the selection of new project equipment, the first consideration is the price, manufacturing cost and product sales price of the equipment.
3. Reduce the capacity of the entire production wire motor
Teng energy consumption is one of the most important production costs of waste aluminum production aluminum powder, which directly affects the competitiveness of the product market and the economic benefits of the enterprise. Therefore, to ensure that the product
is simplified to select the process of high -efficiency and low energy consumption processes under the premise of the quality and quantity requirements.
The technical ideas introduced below are based on simple, low consumption, energy saving, and reduced processing costs. Generally, the installed capacity of the full set of equipment for 600 tons of waste aluminum renewable aluminum powder is the installation capacity of 600 tons 75KW.
. Introduction to the production of aluminum powder production
4.1 Waste -pull cans to produce aluminum powder
4.1.1 The ingredients and aluminum powder ingredients
3004 aluminum alloy chemical ingredients
element content% cumax simax femax mg znmax each other total balance
3004 alloy 0.25 0.70 0.70 1.0 ~ 1.5 0.8 ~ 1.3 0.25 u003C0.05 ≤0.15 Al
Strophic tibs After crushing, the ingredients are basically unchanged, and the overall component remains the original 6063 ingredients
ingredient Al Si Fe CU MN MG Zn
The content of 94.7% 0.3% 0.7% 0.25% 1.0-1.5% 0.8-1.3% 0.25%
4.1.2 The specifications and uses of waste cans to produce aluminum powder to produce aluminum powder : The average particle size of the product is φ1-3mm. The granularity of the product is based on the user’s needs to be basic spherical, a small amount of hemispherical and polyphoric. The use is mainly produced by fireworks and firecrackers, steelmaking and iron alloy.
4.1.3 Equipment Introduction and operation
The LF-3 crusher is used. Special shear function, one -time operation can be crushed into powder. The process is simple and easy to operate. It covers an area of about 20 square meters. The installed capacity is 15kW.
The special crushing machine for LF-3 jackets, should be cleaned by flat-flat or flattened waste can be washed, and then directly put into the device’s feeding warehouse. R n can be crushed into powder. The operation is extremely simple.
4.1.4 Cost calculation
1, recycling price per ton: about 11,000 yuan/ton
2. Sales powder price: 15100 yuan/ton Left and right
3. Machining machines per hour: 50kg, installation capacity: 15kW
4. Power consumption per ton of processing , This accounting is calculated based on 1 yuan/duct, the following calculations are the same)
1. Each set of units operate with two people, each monthly salary: 900 yuan
2 2 2 2 2 2 2 2 2 2 2 , Machining per ton, labor cost: 150 yuan/ton
3. Mao profit: about 3500 yuan/ton.
4.2 The crushing of waste aluminum lines, waste cables, and light aluminum lines
4.2.1 Raw materials
The ingredients of high-quality materials are basically pure aluminum, which should meet the requirements of national standards. Among them, waste high and low-pressure aluminum lines, waste cable light aluminum lines
The national standard GB/T3190-1996z, the card number is the number of the card, the number is the number 1050 (formerly L3). The cable is a single or multi -share line.
r r
ingredient Al Si Fe Mn Mg Zn Ti other
content 99.5%: 0.25% 0.40 0.05 0.05 0.03 0.03 0.03
. After crushing, the formation of aluminum powder basically retains the original ingredient content.
4.2.2 The specifications and uses of aluminum powder
The product particle size is determined according to the thickness and length of the line segment, and the average particle size φ2-6mm. Granules: Basically spherical and hemispherical. The aluminum powder produced by this raw material is waste
The is the highest grade of aluminum powder in aluminum and can be used as coating aluminum powder.
4.2.3 Device Introduction and operation
Plores to intercept the waste aluminum line into line segments. According to the requirements of the finished powder, the interception section is short, usually 4-6mm.
The cutting can be treated with a disc scaled machine. The disk automatic shear machine cuts 80-120kg per hour. According to the thickness of the waste aluminum line and the length of the waste line, the thicker the line diameter, the higher the output, the thickest can cut φ12mm, and the length is not limited. It can be cut alone, or more shares can be cut at the same time. The capacity of the cutting machine is 5.5kW.
Plip-cutting, forming a uniform specification of wire segment wool, and then crushed into a certain specifications of aluminum powder through the LF-4 crusher. The output of the LF-4 crusher is 30-40kg per hour, and the installed capacity is 15kW. L8.F-4 aluminum powder crusher, the feed inlet is equipped with automatic magnetic vibration, the amount of material is adjusted, the shell body is equipped with cooling water sleeve, and it can be used for long pressure to follow
r The n ring water is cooling and is equipped with a temperature meter monitoring. The temperature in normal production does not allow more than 70 ° C in Celsius.
4.2.4 Cost calculation
Plapted into a line segment, crushed the granules through the LF-4 crusher, sieved in the finished product, and packaged into the warehouse.
The recycling price: 12500-13000 yuan/ton.
Cope (powder) sales price: 17500-18000 yuan/ton.
1, the disk automatic shear, installed capacity: 5.5kW.
This can cut different lines per hour, and different long-light aluminum lines: 80-120kg.
The electricity cost per ton: 65-70 yuan/ton.
2, LF-4 crusher, installed capacity: 15 kW.
The 40-45 kg can be crushed per hour.
The electricity cost per ton: 375-420 yuan/ton.
3, workers’ monthly salary is 900 yuan/month.
Mi-processing labor cost per ton: 110-130 yuan/ton.
4.2.5 gross profit: about 3500-3700 yuan/ton. (Excluding taxes, freight and other expenses).
4.3 Waste squeezing profiles, aluminum plate edge corners, mechanical processing aluminum chips and other crushed granules
4.3.1 ingredients
The main The raw material is 6063 aluminum alloy. Commonly scrapped aluminum alloy doors and windows, processing and production in the processing and production, alloy saws and so on. These waste can be made into aluminum powder with mechanical methods.
6063 Squeezing profile alloy ingredients:
ingredient Al Si Fe Mg CR Zn Ti
0.9 0.15 0.10 0.10
4.3.2 Product specifications and uses
The particle size of aluminum powder is generally φ2-6 mm. Powder and other.
4.3.3 Machining process
The waste squeezing profile has various specifications, which vary from thin and thick, and different lengths. If you want to obtain a uniform granules of the finished aluminum powder, you must first make the raw material into a uniform specification of a wool, and then make the granules through the crusher.
The process flow:
Plip the waste profile, such as square tube, groove aluminum and other profiles, then flatten the head of the profile, put it in a dedicated flat -flat flattening The machine is pressed into a plate, and then cut into narrow strips (40-60mm) from the scissors, and then placed in an automatic cutting machine to cut into a suitable small square. Generally, it is 4-4mm or 6-6mm. Form a unified specification of wool. The unified specifications of the wool of the LF-4 aluminum powder are automatically given the feed machine under the material. The feed speed is uniform. It can be adjusted with granular powder φ2-6mm.
4.3.4 Analysis of the economic benefits of waste aluminum regenerative aluminum grains (powder)
Stile aluminum doors and window profiles, architecture and structural facilities, machining heads, sawing dandruff, etc. Recycling price: about 11500-12000 yuan/ton. The sales price of processing grains (powder) is about 1600-16500 yuan/ton.
1, 1, 2, and 3 processes can be processed by 1-2 tons per person per day.
2, pressure plate, segmentation machine: installed capacity of 5.5kW, can be processed by 200-300kg per hour. Power cost per ton: 15-25 yuan/ton.
3, automatic segmentation machine: installed capacity of 5.5kW. 60-80 kg can be cut every hour. Power cost per ton: 70-80 yuan/ton.
4, LF-4 crushing machine: installed capacity: 15 kW, 35-45 kg per hour, processing costs per ton: 375-400 yuan/ton.
5, total processing per ton of finished finished labor costs: 250 yuan/ton.
6, gross profit: about 3500 yuan/ton.
Section 5 of the production and processing method of aluminum powder
1. Melving extrusion method:
This is to heat out the other components (resin, etc.) of metal pigments and powder coatings through the screw extruder. Although metal pigments are fully mixed with powder coatings, metal pigments are not ordered in high -viscosity melt. In addition, in the next crushing process, the flake structure of the pigment will inevitably be destroyed. Metal powder produced with this method is gray when the metal effect is constructed. Therefore, this method is only used for making hammer powder.
2. Dry mixing method:
This is a mechanical mixture mixed with a mechanical mixture to add dried metal pigment powder to the crushed powder coatings. The advantages of dry mixing method is that metal pigments and powder coatings are not very intense when mixed, thereby preventing the deformation of sliced metal pigments, and metal effects will not be affected. In addition, loose pigment/resin mixed is also very conducive to the orientation of metal pigments and improves the flash effect. The disadvantage of the method is that when the automatic spraying equipment is used to process the recycling powder, there is a large difference in the shape, density and charge of the metal pigment and the resin powder particles, thereby generating separation.
3. Bonding-part:
This mixing the metal pigment with powder coatings, while heating at the same time, so that the temperature just exceeds the softening point of the resin. At this time Metal pigments are fixed and bonded on the surface of sticky resin powder, thereby preventing the separation of metal pigments from resin powder during construction and after recycling during construction. It is the popular state -based method now.