How to mix trace elements

First, the question raised
        Trace elements in the formula is a very small percentage of the powder, usually powder trace, valuable and important, trace elements in the overall distribution of the powder is not uniform, determines the success or failure of the mixing task.
Second, trace elements are not easy to mix the reasons
        1, The trace elements added in small quantities, and sometimes only 1 ‰, or even less; the same time, trace elements are particularly valuable and important, play a key role in product quality, therefore, once the accumulation of trace elements in the bucket dead ends, it will result in scrapped products .
        2, Usually the main flow of food, additives, pharmaceuticals and other industries less fluid, to a very small amount of trace elements mixed has brought great difficulties.
Third, the common solution
       1, The use of incremental incremental equal-volume mixing method to solve, continue to dilute the trace elements to achieve its purpose of uniform mixing. For example, in a mixing task with a trace element content of 1% and a total of 100 kg of mixed powder, a mixture of 1 kg of trace elements and an equivalent amount of 1 kg of bulk powder is first mixed and then mixed with an equal amount of 2 kg The main powder mixed; mixed with a certain amount of time and then mixed with an equal amount of 4 kg of the main body powder; ... until all the main body powder 100 kg of main body powder all mixed until mixed. This method requires a lot of manual operation, time-consuming, laborious, many links and error-prone.
       2, For the trace elements added little and the main flow of powder is not good, the need for the use of forced mixing shear mixing function, so that you can overcome the difficulties of powder flow is not good, while through repeated Cut the trace elements, make it mass evenly, to achieve the purpose of uniform mixing of trace elements.
       3, There is a trace of the powder mixture must pay attention to equipment dead ends of materials to avoid the dead ends of the trace elements lead to mixing failure. For trace elements easy to accumulate in the corners of the barrel difficult, need to be able to mix bucket barrel equipment, so you can avoid dead ends, to avoid trace accumulation of trace elements.
Fourth, the perfect solution to the problem
        Adopting the most technologically advanced mixing equipment can perfectly solve the difficult problem that trace elements are not easy to mix, such as double-motion mixer, which combines the advantages of gravity diffusion and forced mixing two types of mixing equipment, Forced mixing device at the same time interspersed with the powder, shearing, powder to increase the coercive force, to fundamentally solve the problem of mixing. To achieve a one-time mixing to ensure the quality of mixing and improve the mixing efficiency and reduce manual participation, many cases show that this is the best solution to the mixed trace elements, the best way.
Five, for example
       In Zhengzhou, a famous food company, they need to add 5 ‰ of yeast in the flour.
   At the beginning,they use a 600-liter V-type mixer with the addition of artificial intervention, "the same incremental method" to mix the mixing process, as the yeast is minimal addition of trace elements plus flour flow is poor, stacking angle greater than 42 ° Typical mixing process problems. If mixing directly with a V-blender can not achieve the purpose of uniform mixing, the complex mixing process needs to be manually intervened by the complicated equal-increment method to meet the requirement of uniform mixing. The entire mixing process needs more than three hours.
        Later, the use of double movement mixing equipment to solve the above mixing process problems, through repeated experiments to draw the following results:
     1, In a 400-liter double movement mixer to complete a one-time feed;
     2,The boot mix, mixing time 1 hour and 10 minutes (eliminating the need for the same amount of incremental manual intervention process);
     3,After mixing test: mix to meet the various process requirements.