Which mixer is the best mixing uniformity for the production of feed premixes?

I've seen all kinds of mixers in the industry, and the results are good.

I have seen horizontal compasses, horizontal rakes, horizontal twin shafts, maces on horizontal shafts, vertical single screws, and three-dimensional mixers.

The mixing uniformity can be satisfied, and the highest efficiency should be horizontal compass and twin shaft paddles.

In Huzhou pig feed premix, with a belt mixer, they add bacteria to the feed, fermentation after mixing, this mixer performs very well on the moist material, basically about 10 minutes to meet the uniformity requirements.

In South Korea, I have seen a twin-shaft paddle continuous feed mixer, which has higher efficiency, but it has relatively high supporting requirements for feeder feeding uniformity and output per minute.

With 6SP series vertical mixing mixer.

In the case of feed, it is vertical.

What kind of mixer is used for the production of feed premix, we have several here, you can refer to it.

9HWP Series Feed Mixer.

The new rotor structure of "screw belt + propeller" has no dead angle in mixing, fast speed and higher uniformity;

The shaft end and discharge door adopt unique mature sealing technology to ensure no leakage;

It is suitable for the mixing of powder, granular, flake and miscellaneous materials in feed, food, chemical, pharmaceutical, pesticide and other industries.

SHDJ series single-shaft paddle mixer.

Inner and outer double-layer paddle design, special arrangement structure, high mixing uniformity, short mixing cycle, mixing time 1-3min, coefficient of variation CV 5%;

Materials with large differences in physical properties such as specific gravity, particle size, and shape are not easy to produce segregation when mixing;

Equipped with a liquid addition system, multiple liquids (water, grease, molasses, etc.) can be added;

The filling coefficient can be variable, ranging from 25% to 100%;

The hard tooth surface reducer is directly connected to the rotor, which has stable and reliable transmission, long service life and low maintenance cost;

It adopts the form of full-length door opening, which is quickly discharged to ensure that there is no residue and prevent cross-contamination;

Equipped with safety interlock device to protect personal safety;

Carbon steel or stainless steel can be selected according to different applications;

It is suitable for feed, additives, chemical, pharmaceutical, pesticide, dye and food industries.

HHLJ series screw paddle mixer (stainless steel).

"Screw belt + propeller" patented rotor structure, which has the comprehensive advantages of screw belt and propeller, no mixing dead angle, and high mixing uniformity;

The hard tooth surface reducer and the mixer rotor are directly connected to drive;

The structure is simple and compact, the installation space of the whole machine is small, the transmission is stable, the efficiency is high, the reliability is better, the service life is long, and the maintenance cost is very low;

The machine is equipped with a liquid addition pipeline, which is suitable for adding water, bacterial liquid, grease, molasses and other liquids; The shaft end and discharge door adopt unique mature sealing technology to ensure no leakage;

Enlarge the power configuration, suitable for the mixing of materials with a moisture content of 50%;

The part in contact with the material is made of 304 stainless steel;

It is suitable for bio-fermented feed, bio-organic fertilizer, chemical, pharmaceutical, pesticide, dye and food industries.

HHLJ series screw belt paddle mixer.

Efficient and precise blending.

"Spiral belt + propeller" patented rotor structure, which has the comprehensive advantages of screw belt and propeller;

The mixing principle of multiple motion states such as shear and convection ensures the mixing effect;

When the amount of mixed oil is high, the special "kneading" effect in the mixing process effectively reduces the formation of oil balls. Stable, durable, low-maintenance, "one machine can be used for 30 years".

The screw belt and paddle are laser cut by δ8-12mm high-quality manganese plate, and the special treatment process is adopted and welded by robot, and the hardness and wear resistance have reached an excellent state;

The shell is made of δ high-quality steel plate, which is laser cut and precision welded, which greatly increases stability and durability;

The hard tooth surface reducer is directly connected to the rotor for transmission, which is stable and reliable, with long service life and low maintenance cost;

Each equipment is overloaded to ensure that all performance indicators meet the standards;

It is suitable for feed, additives, chemical, pharmaceutical, pesticide, dye and food industries.

One of the problems of the twin-shaft paddle mixer is that it will cause residue to bond with the slurry blade on the shaft, especially when the air humidity is high and the premix raw material is sticky.

View the original post

1. Methyl violet detection method:

1. Scope of use Compound feed without chlorophyll.

2. Instruments and reagents: 721 spectrophotometer, standard sieve, absolute ethanol, methyl violet, beaker.

3. Preparation and addition of tracer The methyl violet is fully ground so that all of it passes through a standard sieve of millimeters. Add one-ten-thousandth methyl violet to compound feed.

4. Sample collection and preparation Each batch of feed needs to take at least 10 representative original samples. The number of each original sample is based on the average daily feed intake of livestock and poultry, 50-100 grams of chicken feed, and about 500 grams of growing pigs. The 10 original samples were mixed thoroughly, and 10 grams of samples were separated from them by the quartile method for the determination of mixing uniformity.

5. Determination steps Put the measurement sample into a small beaker of 100 ml, add 30 ml of ethanol and stir it from time to time, and filter it with filter paper after 30 minutes. The zero point was adjusted with ethanol as a blank, and the optical density of the filtrate was determined with a spectrophotometer in a 5 mm cuvette at a wavelength of 590 nm.

6. Calculation of measurement results The mean, standard deviation and coefficient of variation are calculated based on the absorbance value of each measurement.

2. Precipitation detection method:

1. The scope of use is suitable for the determination of the uniformity of various compound feed mixtures.

2. Instruments and reagents 500ml pear-shaped separating funnel, hair dryer or hot plate, oven, balance, carbon tetrachloride.

3. Determination steps.

Weigh 50 g of feed sample, carefully transfer it into a 500 ml pear-shaped separating funnel, add 100 ml of carbon tetrachloride, stir well, and let stand for 10 minutes. Slowly put the sediment at the bottom of the separating funnel into a small beaker of 100 ml, let it stand for 5 minutes, pour the upper layer of the beaker back into the funnel overnight, shake the separating funnel and let it stand for 5 minutes, carefully pour the upper layer of the beaker after the night, add 25 ml of fresh carbon tetrachloride, shake and let stand for 5 minutes, and then pour the upper layer of the white night. Use a hair dryer or electric hot plate to dry the precipitate in a small beaker, and after the solvent volatilizes, the precipitate is placed in an oven at 90 degrees for 2 hours, and then weighed after cooling to obtain the weight of the precipitate in each sample or the weight percentage of the precipitate in the sample.

4. Calculation of measurement results The difference in the weight percentage of the sediment in each sample is used to measure the mixing uniformity of the feed.

The mixing uniformity of vitamin premix is directly related to the quality of the product and the effect of the user after use, which is a very important indicator. The methyl violet method used in the past can not really represent the mixing uniformity of the vitamin premix, because the methyl violet is a very fine powder when ground to 200 mesh, and it will be mixed more evenly in the premix, and the uniformity of the large particles of vitamins in the premix will not be as good as the methyl violet. Therefore, it is recommended to determine the content of vitamin A in the vitamin premix to calculate the mixing uniformity (i.e.:

CV value). Because the particles of vitamin A are the largest particles in the vitamin premix, if its uniformity is good, then the uniformity of other fine powder vitamins will be better. It is necessary to pay attention to the sampling method, generally ten samples are taken after mixing in the mixer (the first and last packages of samples are taken when discharging, and the remaining eight samples are sampled evenly according to the amount of discharge.

For example, if you can pack 45 packets of products in one mix, then take a sample of every five packets except for the first and last packets). Based on the result data of the determination of vitamin A content, the mixing uniformity of the product is calculated.

This is the most accurate method for determining the homogeneity of mixing for vitamin premixes.

There are very few people who measure it, and many companies do not do it according to the regulations, but they also need to do it once in a while, hehe.

In addition, a method for measuring the uniformity of mixing using special tracer particles is introduced: there is an iron powder with an outer pigment, which has a variety of particle sizes and colors, and it seems that it is only imported at present, and no domestic production of this product has been found. You can choose the particle size and color according to your needs, and add it to the material according to the ratio you specify for mixing.

After mixing, the sample is taken according to the principle of taking ten samples for each mixing, and the sample is weighed and placed in a special small magnetic centrifuge to separate the iron powder particles. Place it on a white filter paper, spray it with alcohol, and count how many color spots there are to calculate the mixing uniformity (CV value). This can be completely according to your requirements as large as the size of the particles, and how much proportion to add.

The specific gravity of iron powder is very different from that of vitamins! What to do? What is the size of the iron powder you use?

Is it consistent? There's Lao all, can you explain that? Thank you!