How to determine the ratio of ball mill loadingDate: 2019-07-02 Views:
Use the "Golden Section" to determine the rate, that is, the ball: material: (water + air) = 1.618: 1: 0.618; "golden segmentation" is an optimal principle of distribution, in fact, everything is in pursuit of harmonious beauty, ball and ball The ratio of water to air is no exception. However, the distribution ratio according to the golden section is the theoretical ratio and the optimal ratio. The actual situation is also determined according to the raw materials, the ball stones, and the mill conditions.
The raw materials include a main raw material and an auxiliary raw material, and the auxiliary agent includes a water reducing agent, a reinforcing agent and a grinding aid, and sometimes the grinding aid and the water reducing agent are integrated. The main raw materials are also divided into three categories, namely, ridge raw materials, medicinal raw materials and plastic raw materials, and the spine of the spine is also commonly known as skeleton raw materials, such as silicon aluminum. Agent flux is also commonly known as low temperature fluxing materials, such as feldspar, mica, wollastonite, diopside, dolomite, limestone and the like. The molder also shapes, meaning plastic and sticky raw materials, such as kaolin, bentonite, processed ball soil. In fact, there is no obvious difference between the three, and most of them have crossovers, which belong to them and belong to this. The raw materials that are more difficult to grind are actually some natural hard ore. Generally, the raw materials entering the stockyard are divided according to the form, stone powder, stone, sand, soil and mud. The materials that are more difficult to be ball milled are concentrated in the first three, namely stone powder and stone. And sand, especially the stone with large grain size and high hardness is the difficulty of wet ball milling. In the north, due to the addition of a hard block of hard clay such as alkali rock, a large size ball stone is artificially introduced. A typical case. Plastic raw materials, auxiliaries, water and air are the agents that help these hard materials to suspend, adhere, wash and peel. With the help of these agents, the efficiency is improved.
Using the pyramid principle and the "golden segmentation" rate to determine, consider the radial dynamic motion of the ball mill, small ball stone: medium ball stone: large ball stone = (1.618 +1 + 0.618) 2- (1 + 0.618) 2: (1 + 0.618) 2-0.6182: 0.6182, converted to a percentage of: small ball stone 75%, medium ball stone 21.35%, large ball stone 3.65%.
Ball stones include natural and artificial. Natural stone is ochre pebbles. Its shape and defects affect efficiency, so many factories have begun to use artificial ones. Artificial ball stones are actually quite a lot, such as artificial ochre pebbles, medium aluminum balls (including mechanism and manual) and high aluminum balls, but high aluminum is rarely used for the preparation of green powder, used for high white and high. The fabric is still required. Artificial ochre pebbles are the only things that have appeared in ceramic factories in recent years. There are two reasons. One is that the lining lining processing plant processes the lining scraps into ball stones for comprehensive utilization, and the other is natural shale. The pebbles are indeed less. For the most widely used medium-aluminum ball and ochre pebbles, it should be treated differently.
The medium-aluminum ball is divided into 60 balls and 70 balls with alumina content, that is, porcelain balls with an alumina content of more than 60% and porcelain balls with an alumina content of more than 70%. The manufacturing method is divided into manual balls and mechanism balls. There is a big difference, be careful when buying and using. The table below lists their differences and selection quality points.
The total amount of ball stones is related to the composition of the formula. If the formula is better, the water can be controlled to reduce the value, then either the tonnage of the ball material can be increased, or the toll of the ball can be increased, that is, the 60-ton ball mill is loaded. The dry weight of the material is not necessarily 60 tons. It is recommended to adjust it according to the proportion and hardness of the hard material.
Compared with the medium aluminum ball, the ochre pebbles are irregular in diameter and shape, and because of the low specific gravity, low hardness, and easy cracking, the ball is generally 40mm, 60mm, 70mm, and the ratio is 4:3:3. .
In short, the ball water-air ratio and the large, medium and small ball stones have rules to follow, based on the principle of "pyramid" and the principle of "golden segmentation". But it can't follow the old rules and seek the best value in the change. The hardness, specific gravity, shape and gradation of the ball stone and the moisture and viscosity changes of the mud constitute the energy-saving dynamic system of the wet ball mill. The so-called dynamic refers to energy saving in sports, and sports actually have macroscopic and microscopic, macroscopic refers to ball mill, microscopic refers to grinding aid. Therefore, "one dose, one machine, one ball, one water, four integrations" form the wisdom of ball mill energy saving.