Because the higher the height of (1), the smaller the gravity of the earth and the smaller the pressure.
(2) When the temperature is high, the gas molecules expand when heated, and the density decreases. At this time, the atmospheric pressure decreases.
(3) The faster the wind speed, the smaller the pressure.
What are the factors that affect atmospheric pressure? Figuratively speaking, atmospheric pressure is the gravity of air. In this way, the more air, the greater the density and the greater the air pressure.
To give another image example, at sea level, the atmospheric pressure on a human thumb nail is about 1 kg, that is, the air column above the nail weighs one kg. If you climb a high mountain, the air pressure on your nails is less than 1 kg when you extend your thumb. This is because on high mountains, you are closer to the edge of the atmosphere, and the air column pressing on your thumb is shorter than when you are at sea level. At this time, the air pressure becomes smaller. Similarly, if you are below sea level, such as a canyon or something, the air pressure is high. In this way, the air pressure is related to the altitude. In addition, air pressure and air humidity, wind speed, temperature and so on all have an impact, because these factors will affect the weight of air. The first is height, the second is temperature, and the last is airflow.
Because the higher the height of (1), the smaller the gravity of the earth and the smaller the pressure.
(2) When the temperature is high, the gas molecules expand when heated, and the density decreases. At this time, the atmospheric pressure decreases.
(3) The faster the wind speed, the smaller the pressure.
What are the main factors affecting tire pressure? 1, the tire pressure is too low, which may easily lead to excessive wear of the shoulders on both sides of the tread and excessive tire heat, which may lead to sudden damage. When the tire pressure is too high, it is easy to cause excessive wear in the middle of the tread, reduce the grip performance of the tire, increase the risk of slipping and cutting, and then lead to tire fatigue.
2. If the tire pressure of the car is too high, the car feels jumping when driving. If the air pressure is low, the consumption of tires is relatively large, so it is necessary to ensure the normal use value of tires. Of course, it is better to lower the normal value in summer, because of the hot weather and air pressure problems, so as to avoid a flat tire.
What are the main factors that affect spot copper? 1, supply and demand.
According to the principle of microeconomics, when the supply of a commodity exceeds the demand, its price falls, and vice versa. At the same time, price will affect supply and demand in turn, that is, when the price rises, supply will increase and demand will decrease, on the contrary, demand will increase and supply will decrease. This basic principle fully reflects the internal relationship between price and supply and demand.
Inventory change is the dominant factor to understand copper supply. The futures exchanges that have great influence on the market mainly include Shanghai Futures Exchange (SHFE), London Metal Exchange (LME) and the New York Mercantile Exchange.
2. Macroeconomy
Copper is an important industrial basic raw material, and its demand change is closely related to economic growth. When the economy grows, the demand for copper increases, thus pushing up the price of copper. When the economy is depressed, the demand for copper shrinks, which pushes the price of copper down. Under normal circumstances, the market will take the economic growth rate, industrial production growth rate (added value) and related monetary and industrial policies as the important analytical basis for the changes in the macroeconomic situation.
What are the main factors that affect the price? Indirect factors include time, region, climate, policy, production conditions, customs and habits, consumer psychology and so on. These all affect the relationship between supply and demand by changing commodity prices.
The most important factors affecting commodity prices are: 1, value determines price 2, and supply and demand affect price.
What are the main factors that affect asset demand? First, the total wealth. The greater the total wealth, the greater the demand for assets.
Second, the expected rate of return of this asset relative to other assets. Compared with other assets, the higher the expected rate of return of such assets, the more attractive it is.
Third, the liquidity of assets relative to other assets. The so-called liquidity refers to the ease of converting assets into cash when investors need funds. Other things being equal, people always like more liquid assets. Fourth, the risk level of this asset relative to other assets. Other things being fixed, the greater the risk, the lower the investor's investment enthusiasm.
What are the main factors affecting ore crushing? 1 and crushing equipment.
For the same crushing operation, the productivity obtained by using different types of crushing equipment is different. The rotary productivity is 2-3 times higher than that of the jaw type with the same specification under the condition of the same ore feed and product particle size. Among similar jaw crushers, the productivity of compound pendulum type is 20-30% higher than that of single pendulum type. For the same type of equipment, the absolute value and relative value of productivity increase with the increase of specifications and sizes.
With the increase of rotating speed, the productivity of crusher is also slightly improved, but the power consumption is also increased. When the rotational speed is greatly increased, the power consumption increases sharply, but the productivity increases little. Excessive rotation speed will also lead to productivity decline and crusher blockage, because it takes a certain time to draw ore, especially for medium and fine cone crushers. If the rotating speed is too high, it will increase the centrifugal force of the material and jump up to block the crushing cavity. Therefore, there is usually no need to increase speed to improve productivity.
The size of the ore outlet actually determines the working quality and load of the crusher. Although the ore outlet is large and the productivity is high, the crushing ratio is reduced and the crushing effect is weakened. When the discharge port is large, most of the materials are hardly broken by the crusher, and there is not much crushing effect. When the ore outlet is small, although the crushing ratio is high, the productivity is too low. A crusher of a certain model and specification has its proper crushing ratio range, that is, the ore outlet has a certain adjustment range, which should be carefully selected and adjusted according to the working conditions of each crushing section.
The meshing angle (or biting angle) of jaw crusher (referring to the included angle between movable jaw and fixed jaw during ore clamping) is too small, which will not play a big crushing role; If it is too large, the ore will be pushed out of the crushing cavity and cannot be crushed. To achieve crushing, you must first clamp the ore.
2, the influence of operational factors
The operating factors of the crusher also affect the productivity of the crusher. Continuous and uniform ore feeding can not only make the production run normally, but also make the productivity higher. When closed-circuit crushing is used, because a large amount of cyclic load is added to the feed, the particle size of the feed is relatively fine, and the qualified intermediate product can be obtained by slightly crushing the cyclic load. Therefore, when the crusher works in closed circuit, it can work at full load and high efficiency, and the production capacity is increased. According to different hardness ores, the closed-circuit production capacity can be increased by about 15-40%.
3, the influence of ore properties
The harder the ore is, the greater its compressive strength is, the more difficult it is to break and the crushability is poor, so the production capacity of the crusher is low. On the contrary, it is high.
If the ore is fed in large chunks for a long time, the average particle size of the ore is coarse and the crushing workload is large, the crushing production capacity is low; If small pieces of ore are fed for a long time, the capacity of crushing it will be great. The production capacity of this crusher is higher than that of the crusher with loose crushing structure and developed cleavage. When the ore contains a large amount of slurry or fine-grained ore, these fine-grained materials will agglomerate or adhere to coarse-grained ore due to the increase of humidity, thus increasing the viscosity of the ore, reducing the ore drawing speed in the crushing process, blocking the crushing cavity, and even making the crushing process impossible in serious cases.
What are the main factors that affect the td market of silver? Gold and silver T+D: You can make more short positions to make money regardless of ups and downs; It can be bought and sold on the same day or held for a long time; Margin trading only needs 1 1% capital to fully invest, with high capital utilization rate; The transaction time is long. You can trade gold, silver, T+D all day and night. Just go to your local bank and get an online banking card. You can open gold and silver T+D online when you go home. Only when you open it, fill in our agency number, and the transaction fee can be reduced (at least four ten thousandths, the warehouse is free). At the same time, it can provide market trading guidance. If you want to judge the price trend direction of gold, silver and T+D, your mentality and low handling fee are the most critical. Gold and silver prices are most affected by European and American economic indicators and international turmoil. We should pay attention to international news and comprehensively analyze the price trend with technical aspects. I started doing this in 2009, and now I can better grasp the market trend of this market. What factors mainly affect the texture of jelly? I. Mineral composition. Because rocks are polycrystalline, the distance between particles in mineral crystals is very small, and the gravity is far stronger than that between particles. The composition of clastic sedimentary rock cement has the most obvious influence on strength. B, the influence of structure. In general, because the average distance between interstitial points of particles is much larger than that between particles in crystals, the firmness of mutual attraction is low, so the connection between particles determines the resistance of rocks. C, the influence of water. Gravity water and bound water have an important influence on the mechanical properties of rock mass, which mainly changes the structure and composition of rock mass through lubrication, freezing and thawing, undercurrent, hydrolysis, connection and other functions. D, the characteristics of the force also have an impact on the engineering geological properties. Force nature, stress level, confining pressure, stress increase rate, stress duration, stress increase and decrease process, etc. E, temperature effect, the strength and elastic modulus of rocks below zero are relatively high, above 1000 degrees, and the influence of mechanical properties varies with rock types. That's about it.