Following the above, in this part the discrete element method (DEM) and Plackett–Burman (P–B) design were used to investigate the mixing performance of a double paddle mixer. To this end, several material properties (i.e., particle size ratio, density ratio and composition), operational conditions (i.e., filling pattern, fill level and impeller rotational speed) and geometric parameters (i.e., paddle size, angle and number) were examined. In order to quantitatively analyse their effects on mixing performance, a number of key performance indicators (KPIs) were defined, namely the average steady-state RSD (KPI 1), the mixing time (KPI 2) and the average mixing power (KPI 3). In addition, KPI 4 was formulated as a multiplication of KPI 2 and KPI 3 to examine the mixing time and energy consumption at the same time.

To improve the understanding of the mixing performance of double shaft, batch-type paddle mixers, the discrete element method (DEM) in combination with a Plackett–Burman design of experiments simulation plan is used to identify factor significance on the system’s mixing performance. Effects of several factors, including three material properties (particle size, particle density and composition), three operational conditions (initial filling pattern, fill level and impeller rotational speed) and three geometric parameters (paddle size, paddle angle and paddle number), were quantitatively investigated using the relative standard deviation (RSD). Four key performance indicators (KPIs), namely the mixing quality, mixing time, average mixing power and energy required to reach a steady state, were defined to evaluate the performance of the double paddle mixer.

Different industries use different mixers​ due to different types, characteristics， using and subsequent treatment methods of raw materials. The selection of a suitable mixer for compound fertilizer production plays an important role in ensuring the smooth progress of production and the final quality of products. The editor will show you how to choose a suitable mixer for compound fertilizer manufacturers.

There are different types of horizontal mixers, each model has its own structure point, for some of the applications in the connected industries is some places are similar, but also to a certain extent to be divided, there are some differences, the following introduces the commonly used several mixer models and structural properties.

2. The advantages of horizontal mixer are mainly manifested as follows: wide range of application, less destructive to materials; high stability, long life; high loading rate, strong sealing; etc. The following article details several advantages, and how to choose a horizontal mixer according to these advantages, let's take a look together.

At present, many users choose vertical mixers in powder or feed processing, but experts point out that vertical mixers have many shortcomings, and their maintenance rate is also very high. It is recommended to choose horizontal mixers. The mixing efficiency is very high, the mixing quality is very good, and the discharge time is short. There are many types of horizontal mixers on the market, and the quality is good or bad. So, how should users buy a horizontal mixer with high cost performance? Let's find out together.

Horizontal mixers are widely used in putty paste, real stone paint, dry powder mortar, thermal insulation mortar, ready-mixed mortar, dry-mixed mortar, trench joint agent, interface agent, perlite thermal insulation mortar, hollow microbead dry powder mortar, putty, medicine, food , chemicals, feed, ceramics, refractories and other solid-solid (ie powder and powder), solid-slurry (ie powder and glue) mixing, especially suitable for viscous material mixing.

Solid mixers are relatively simple low-investment equipment, and most mixers can simply be classified and offered options based on the mixing mechanism applied. In the last issue, we introduced the working principle of the mixer and the type of the mixer. Now we will simply introduce the method of selecting the mixer.

Solid mixing technology is mainly used in pharmaceutical, food, pesticide, chemical and other industrial production, the application is extremely wide. In the pharmaceutical production, for the preparation of raw materials or product standardization and homogenization, the mixer is an indispensable device.

Through practice, it is found that the finished ore produced by grate rotary kiln process has the characteristics of uniform quality, good metallurgical properties, more fuel available and strong adaptability to raw materials. This paper introduces what equipment should be equipped with the production line equipment.