NEWS

2023.11.21

How to ensure the sand mill grinding material quality problems

Sand mill in the grinding process is prone to grinding color paste does not meet the requirements of the phenomenon, will bring us a waste of resources. In order to meet the needs of users, grinding color slurry constantly find out the reasons from the actual operation, so that the fineness of grinding color slurry meets the requirements and improves the work efficiency. Therefore, we analyze the reasons and solutions by analyzing the reasons for grinding color paste not meeting the requirements. The reasons why sand mill grinding color paste does not meet the requirements are as follows. 1、The fineness of the pigment itself is larger than the fineness required by the color paste and cannot be refined. In most cases, the original particle size of the pigment is larger than the fineness required by the color paste. Solution: Process and crush the pigment further to make its particle size below the fineness required by the color paste, because the dispersing process of the color paste grinding can not solve the problem of further reducing the original particles. 2、High content of pigment impurities, which can not be refined, such as mixing paint skin, fiber, dust, fine sand and other impurities. Solution: Firstly, we should rely on the pigment supply department to strengthen the management, forbid mixing the impurities and ensure the product quality; Secondly, when pairing color paste production workshop, strengthen the paint filtration, pay attention to the timely removal of identifiable impurities in the powder; when the mixed impurities are dispersed in the three drums, the full bucket, the remaining bucket operation or the single roller mill tandem should be adopted to make full use of its filtration function.

2023.11.16

The correct working process of high shear emulsifier

High shear emulsifier is designed for mass production, using claw bite, double and suction structure, to avoid the dead space and vortex phenomenon caused by the upper part of the material is difficult to inhale. The shear force of the equipment is stronger, thus the production efficiency and dispersing emulsification quality are improved. When the external energy input, the two materials reorganize into a homogeneous phase. Due to the high tangential speed generated by high-speed rotor rotation and high-frequency mechanical effects brought about by the strong kinetic energy, so that the material in the stator and rotor narrow gap by a strong mechanical and hydraulic shear, centrifugal extrusion, liquid layer friction and turbulence and other integrated effects, the formation of suspensions (solids/liquids), emulsions and foams. Thus the immiscible solid phase, liquid phase, gas phase in the corresponding mature technology and the appropriate amount of additives under the joint action, instant uniform fine dispersion emulsification, after high-frequency cycle, to obtain stable high-quality products.

2023.11.15

How to fill the grinding media of horizontal sand mill?

First, the horizontal sand mill media and its loading:Horizontal sand mill can be used glass balls, zirconia balls, steel balls for grinding media, each medium is better to use a uniform particle size before loading into the cylinder media should be cleaned beforehand, screening. Grinding with a certain media according to the dispersion of the material to be ground fineness and viscosity to choose. The principle is: the harder the material should be followed by the selection of harder media; product requirements, the finer the media particle size and filling volume should be increased accordingly; be ground material particle size is coarse, the selection of media particle size should be coarse. Horizontal sand mill grinding media loading is about 85% of the cylinder volume, the specific should be loaded how much, according to the particle size of the media, the material's sensitivity to temperature, as well as material varieties and other factors to determine.

2023.11.14

What if the stainless steel reactor is not hot enough?

Stainless steel reactor temperature is not enough may be caused by a variety of factors, the following list of several common situations and the corresponding solutions. 1、Insufficient heating rate: If the heating rate is insufficient, then the temperature of the reactor will rise very slowly. In this case, the temperature can be increased by increasing the heating power or extending the heating time. 2, Improper heating medium: the heating medium will also affect the reactor temperature. For example, if the medium used has low transfer efficiency, the temperature of the reactor will rise slowly. You can choose a better heating medium or replace the heating method to try. 3, Control system failure: sometimes, the control system of the stainless steel reactor may fail, resulting in unstable temperature in the kettle or unable to reach the set value. You can check whether the control system is working properly and try to readjust the control parameters.

2023.11.13

Influence of grinding beads on the grinding efficiency of sanding machines

The impact of grinding beads on the grinding efficiency of the sanding machine is mainly reflected in the following aspects: 1, Grinding bead particle size and surface finish The size of the grinding bead determines the contact point between the grinding bead and the material. The smaller the particle size of the beads in the same volume the more contact points, the higher the theoretical grinding efficiency, but this is relative. When grinding materials with large initial particles, for example, for a 100 micron slurry, smaller particle size beads may not be usable because the impulse of a small bead does not fully grind and disperse the energy. In this case, a bead with a larger particle size should be used. For the same material, the wear rate is directly proportional to the surface finish of the grinding media, so the surface smoothness of the grinding media is needed to reduce the wear rate. While grinding and pulverizing the material, the grinding beads will also have abrasion, and the abraded grinding beads will be difficult to separate after mixing with the slurry, which will affect the product quality. Therefore, generally speaking, the smoother the surface of the grinding beads, the better.

2023.11.08

Factors affecting the effectiveness of the disperser

High-speed disperser equipment plays an important role in the modern industrial equipment mixing system and mixing, especially in solid-liquid mixing, liquid-liquid mixing, oil-water emulsification, dispersion of uniformity and so on has a very important application, shear milling is through the high-speed mixing and mixing, grinding, shear, homogeneous formation of uniformity of mixing. If you want to analyze the performance and characteristics of high-speed disperser, you need to understand the dispersing effect of the disperser materials affect several factors: 1. The form of dispersing head mainly has intermittent and continuous type (continuous type is better than batch type). 2. The shear rate of the dispersing head (the higher the shear rate, the better the effect) 3. The tooth structure of the dispersing head (divided into primary teeth, medium teeth, fine teeth and ultra-fine teeth, the finer the effect, the better)

2023.11.07

What is the temperature resistance of stainless steel reactors?

Stainless steel reactor is a kind of commonly used chemical equipment, which is widely used in various chemical reaction processes due to its good corrosion resistance and high strength. The temperature resistance range of stainless steel reactor is affected by the selection of its material and manufacturing process, which will be introduced in detail below. The material of stainless steel reactor is mainly stainless steel, common 304, 316, 316L and so on. These stainless steel materials have different temperature resistance ranges, of which 304 stainless steel is suitable for chemical reactions at temperatures not exceeding 80 ℃, 316, 316L stainless steel is suitable for chemical reactions at temperatures not exceeding 120 ℃. Therefore, the temperature resistance range of the stainless steel reactor mainly depends on the material selected.

2023.11.03

Key factors affecting grinding fineness in sand mills

Sand mill grinding fineness is an important indicator of sand mill processing effect, which determines the quality of processed products. However, to achieve the sand mill grinding fineness we want is not an easy thing, this article will discuss several key factors that affect the sand mill grinding fineness. First, the sand mill processing medium Sand mill processing medium determines the processing material and grinding method. Different processing media will have a different impact on the fineness of grinding. Such as grinding wheel particle size, composition and hardness, lubricant lubrication status and so on will have an impact on the grinding fineness of the sand mill. Second, grinding strength Grinding strength directly affects the size of the grinding fineness of the sand mill, but also affects the service life of the grinding equipment. Such as excessive use of strength in grinding, may damage the grinding equipment; and grinding strength is not enough, may lead to poor grinding results.

2023.11.02

Introduction to the installation steps of stainless steel reactor

Any equipment needs to be installed before use, so the stainless steel reactor is no exception, however, the correct installation steps, not only to promote the use of equipment, but also to reduce equipment damage, the following is said to be the specific installation steps. 1、Handling: when handling, only allow the tank ear to be stressed, do not allow rolling and pry bar, avoid vibration, collision, is strictly prohibited to take over the pipe clamps, clamps and other vulnerable parts of the force. 2、Hoisting:the rope must be hung on the specified part, not touching with any object, and put it down gently and steadily. 3、Pre-installation inspection: before assembly, the inspector should wear clean soft-soled rubber shoes to enter the container to check the glass-lined layer for any abnormality.

2023.10.31

Stainless steel reactor should be regularly checked items

Stainless steel reactors need to be inspected regularly. The regular inspection of the running reactor, including external inspection, internal and external inspection and inspection of three kinds. First, the main contents of the external inspection are: the external surface of the kettle body has no cracks, deformation, leakage, local overheating and other abnormal phenomena; safety accessories are not complete, sensitive, reliable; fastening bolts are not intact, all tightened; foundation has no sinking, tilting, and anti-corrosion layer damage and other abnormal phenomena. The inspector's work is mainly responsible for the external inspection of stainless steel reactor, but also the operator's inspection tour and daily inspection of a content. Vessel inspectors of the external inspection should be carried out at least once a year.