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Author: Smartweigh–Multihead Weighter
Tsinghua Alumni City Intelligent Manufacturing Technology Professional Federation Collaboration Ceremony Intelligent Screening——Make the world more orderly What is sieving? In fact, the screening is carried out subconsciously every day with purpose. To give a simple example, when you buy a box of strawberry seedlings, you will use the method of watching to see if there is any strawberry seedling in the box. There are bad ones. If you think which one is bad, you are likely to be good at pinching it. Once it is determined that it is bad, the next step will be to pick it up and throw it into the trash. When the remaining box of strawberry seedlings is all intact In this case, we will proceed to the next process to clean up. This whole step is a very classic screening step, that is to say, a whole process of orderly classification. Categorization is for better solutions, such as throwing out the bad and eating the good, so in this case, the additional use value that sieving gives us is to provide better taste.
Three main uses of intelligent multihead weigher When the requirements for screening in various fields are getting bigger and bigger, machines and equipment will be born in response. At this stage, the main purposes of screening in the world are divided into three categories. Just now everyone mentioned the category of agricultural and sideline foods. In agricultural and sideline foods, screening is used to classify commodities. When the quality of our daily life is getting better and better, when we eat more than just to be better, when a large number of people want to pay for high quality, the food completed by sieving Class-level classification can generate higher and higher use value.
The second category is in the environmental protection waste material recycling industry. The screened material is what we usually say to put it plainly. There is a saying called waste utilization. After we sort and sort the waste, its recyclable use value is can be reflected. In fact, the screening requirements for environmental protection waste recycling are the most obvious in the world, and the total sales of related machinery and equipment are also the largest, but in China, the application of multihead weigher is the last, why is this? Is there no requirement for garbage sorting and recycling in my country? Actually it is not so. Have you heard that there is a field of practitioners called scavengers?
There are nearly 6 million scavengers in our country, and the figure in Beijing exceeds 150,000. In fact, from the other side, we can see how much use value the industry of environmental protection waste material recycling can create. Many people even take this as a key field, as a position to make money to support their family, which naturally also contains certain period limitations. With the technological development trend and the development of the times, as everyone's regulations on employment are getting higher and higher, this field will actually be eliminated. At this moment, everyone's requirements for machinery and equipment will be further improved, so everyone has reasons. I feel that the requirements for machinery and equipment in this field are in a period of consideration, and will enter an explosive period. The third category is the industrial production industry that requires a large amount of multihead weighers. There are several key stages in the application of screening in industrial production. The first is the inspection of finished products, no matter how wonderful the design of a production line. , there is always a certain probability that the residual products will eventually be produced. Therefore, before the original equipment or products, the residual products must be screened out by automatic technology, and only the high-quality products are original.
Another stage is the development at the forefront of industrial production. Processing plants require a large amount of raw materials for industrial production every day. Screening can allow qualified, reasonable, and productivity-enhancing raw materials to enter the production process. The screening application in the coal industry to be discussed belongs to the screening of industrial production raw materials. Before getting into the actual discussion, let's look at a set of data, sometimes it is said that the sales market is a very good indicator of whether a request or a machine is actually needed. It can be seen that in the past ten years, the total sales of multihead weigher has been steadily increasing with an annual growth rate of nearly 10% in the world every year. It can be said that the ultimate annual growth rate.
In my country, the total sales of multihead weighers account for 8% of the world's total output every year. We have long known that multihead weighers are widely used in the three major industries of agriculture, animal husbandry, industrial production, and environmental protection and waste material recycling. The data of 8% is not matched. This kind of mismatch comes from two levels. The first is the utilization of machinery and equipment, and the second is the innovation of machinery and equipment. Generally speaking, the intelligent system and precision level of a machine equipment is an evaluation level of the innovation of the machine equipment. Let’s take a brief look at the multihead weigher of the non-intelligent high-precision category. This type of key includes machinery and equipment such as wind separator, water separation, and magnetic separation equipment. Their relevance is to use the most basic characteristics of the object to complete the screening.
One thing that everyone must establish is that not good, does not mean not easy to use. Here is a short story about a processing factory that manufactures soap. There is often a problem on its production line. The original soap box did not put soap in it before, resulting in some empty boxes. The factory hired a ten In the luxurious design department, technical engineers have done a series of investigations and design plans, and produced a set of very complete testing instruments, which are also equipped with excellent robotic arms for crawling. Once the small box is checked to be empty, it will be Catch and throw away. However, due to various reasons, the actual effect in the whole process of operation has been unsatisfactory. Afterwards, the workers on the production line really couldn’t bear to buy a high-power fan and blow it at the production line. These small boxes without car soap are just fine. It is easily blown away, simple and reasonable, and the cost is very low. This is a very typical rational use of wind separators.
But imagine that when we further increase the requirements, the regulation is not only to screen out empty soap boxes, but only to stipulate that the size of the soap loaded in the soap box is uniform, and it is stipulated that the inside of this invisible soap box is only loaded with soap. If a nail is accidentally inserted, this requirement cannot be considered at this moment with the wind sorter, and a more intelligent and high-precision multihead weigher must be used to complete this series of requirements. What is intelligent screening? Recall the first case of washing strawberries, there is a very important step in it: the discrimination of the human brain. Everyone's brain will comprehensively distinguish whether the strawberry seedlings seen and pinched are bad, and will specifically guide the hand's next planning plan for this.
In the same way, the most important step for smart products is to teach the device to think, so that it can comprehensively distinguish whether the screening target is in compliance with the regulations. Take the iron ore field as an example to discuss how an intelligent iron ore multihead weigher works? All mining in my country is divided into rare metal mines, mining enterprises and their intermediary mines, etc. Taking the mining of rare metal mines as an example, how can mining enterprises obtain economic benefits? First, the raw ore was mined from the coal mine, and the raw ore was crushed and ball milled several times to obtain powdery chemical substances with a particle size similar to that of wheat flour. Valuable metal materials are obtained from iron ore powder, and this whole process is generally called heavy medium in the field. All these steps consume a lot of costs including water, electricity, wear and tear of machinery and equipment, chemical compounds, and manpower.
Everyone visited and investigated the mining of two or three hundred mines in China and obtained a data that the cost of one ton of heavy metal ore mining is about 150 or so, how much economic benefits can one ton of iron ore finally bring about? , that is to say, how many valuable metal materials can be obtained? Let's look at a set of data and information. my country is the world's largest tungsten reserve country. More than 90% of tungsten mines are in my country. The tungsten content of silver mines recognized in one field is around 0.4%. What is the definition of this? I worked tirelessly to mine, grind, and select 100 tons of iron ore. Regardless of all the losses at one stage, I could get up to 400kg of tungsten, and 0.4% of the composition in the tungsten industry belongs to silver ore. , There are also many mines that can't even reach 400kg, and only 400kg of tungsten can be exchanged for 99.6 tons of waste ore. Therefore, since owning the coal industry, practitioners have been thinking about a difficult problem, that is, how to obtain greater use value more reasonably. A very simple method is to take the 100 tons of tungsten ore just now as an example. The ore content of each piece of iron ore excavated is actually different. Some iron ore has extremely low content of reasonable metal materials or even no reasonable metal materials at all. If 50 tons of iron ore can be screened out with high ore content 380kg of tungsten is accumulated in the iron ore, so giving up the other 50 tons is likely to consume 20 kg of tungsten, but it saves the cost of 50 tons of iron ore, and completes the economical The optimal control of value, that is to say, is to obtain a greater use value with the least cost.
The most immediate plan is, of course, the choice of manpower. Although iron ore is like a pebble on the side of the road, it is difficult to see the internal structure with the eyes, but some mines also have some surface characteristics, so the processing technology of hand selection is also Speaking of skills, from many European countries before the new century to this year's mining in my country, there are still many mining companies with screening in my country. Many female workers are used to make manual ore dressing plants. When some mines pursue perfect and higher efficiency and precision, they have just begun to adopt some simple non-intelligent system screening plans, such as tap water. The most typical application of water separation is in the media mining industry. The clean coal from coal mining has high quality and low quality. Everyone calls it coal and coal gangue. They have different buoyancy. The simple solution is to pour all the coal into the coal with certain chemicals. In machinery and equipment, air-drying coal after extraction is usually a good coal sold in the current market. This whole process is called coal preparation.
But this whole process consumes a lot of water and causes fatal environmental pollution to the natural environment. In addition, many coal resources in my country are located in Shanxi Province, and Shanxi Province itself lacks water. Therefore, this is undoubtedly a plan that catches the fish and forgets the fish. Going a step further, you guys are just starting to explore the software for an intelligent sensor-based optical sieving system.
Suppose we have a set of intelligent screening system software that can complete high-precision iron ore screening, and what can be produced for mining. In fact, everyone has already mentioned the initial demand for screening, which is to reduce busywork and control costs. On the other hand, for non-ferrous plate ore, an indispensable step in the whole process of the concentrator is the heavy medium. , and the chemical substance obtained after the heavy medium is called waste residue, which is a kind of slurry substance mixed with various compounds whose shape is very similar to cement mortar. This kind of compound is also a major destroyer of the natural environment. my country's strict supervision, and the application of intelligent multihead weigher, only a very small part of the raw ore is thrown into the heavy medium pool to produce waste residue, which reasonably reduces the environmental pollution of this part from the root, so the second benefit is It is to reduce pollution and protect the ecological environment. How does the intelligent multihead weigher consider the requirements of the industrial chain? The solution to the intelligent multihead weigher is to use the magnetic induction equipment developed at the front end, plus the intelligent judgment equipment at the middle end, and the implementation equipment at the back end, to generate a set of intelligent screening organizations.
Take the 100-ton tungsten ore containing 400kg just now as an example. As a screening requirement, it is expected that the larger the waste rock with very low ore content can be screened out, the better, but the whole process must be accurate poverty alleviation. The ore content of iron ore is a prerequisite. For example, there is a machine that screens out 50 tons of waste rock, but 300kg of tungsten is consumed in the whole process, so the transaction is very unprofitable. To complete the economic value, it must also be extracted to obtain valuable metal materials for sale. How does the intelligent multihead weigher consider high-precision regulations? First, the communication system developed at the front end must be high-precision, and all the small changes in the internal structure of a whole piece of iron ore must be collected; second, the identification technology must be high-precision, and the software of the intelligent identification system after the small data signal is mined To capture in real time; third, the actuator needs to be just right and unhurried to execute a special order for a special iron ore at a high speed standard.
Only the organic chemical fusion of these three can truly complete the high precision of the multihead weigher. In addition to high precision, in order to better support the production of customers, another indicator value of machinery and equipment is high production volume. In order to better achieve high production volume, at this stage, our actuators use the air jet method. The operation and execution time of the individual air jet structure will be sub-ms level. Such a reaction rate can extremely support the point transmission belt to transport the iron ore raw materials. Runs forward at a speed of 4 m/s.
Let's take a concrete example to see how much economic value the machinery and equipment with high precision and high production volume requirements can generate for mining. An antimony ore factory under China Minmetals Group was a typical hand-made dressing factory before the application of machinery and equipment. There were 108 female workers who hand-selected 70% of the total ore volume as waste rock and immediately gave up, and did not enter it. The grinding and selection steps afterwards. The mineral content of the waste rock they select every day is inspected and supervised, with an average value of 0.35%.
After applying the intelligent multihead weigher, 70% of the total ore volume is still selected as the waste rock and discarded immediately, but the ore content of the waste rock is extremely controlled below 0.1%. Everyone is very likely to feel that the difference between 0.35% and 0.1% is only 0.25%. Is it for such a deliberate takeout? Taking into account that the mining volume of this quarry is 700 tons per day, and it works 305 days a year, the market price of one ton of antimony is 45,000. The total economic benefit of this 0.25% one year is 15 million Chinese yuan. Intelligent multihead weigher, the original 108 female employees only save 4 female employees, who are specialized in safety inspection of machinery and equipment. The annual labor cost saved is about 5 million Chinese yuan. Such a set of machinery and equipment is a mine. The quantifiable analysis and use value created by the company is close to 20 million Chinese yuan, which has not yet been calculated to reduce the potential environmental protection profits such as waste slag discharge. This type of intelligent multihead weigher produces such great economic value for a field with a long history such as mining. Changing the production process in this field to a certain level can also produce unprecedented results for agriculture, animal husbandry, waste material recycling and other industries. changes.
The ideal of our elite team is to use our equipment and technology to sort out a more orderly world, so that this kind of orderly can create a lot of use value, so that we can use our traditional industrial production, agricultural In the automation technology process of animal husbandry and environmental protection waste material recycling industry, there is a little imprint that belongs to our elite team! Thank you, I'm Tong Xiaolei.
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