What are the application industries of SZG series double cone rotary vacuum dryer

Source：m.scgift.com.cn Release date： 2025-09-02

The SZG series double cone rotary vacuum dryer is an efficient and energy-saving drying equipment, with the core advantage of drying materials in low-temperature vacuum environment (avoiding high-temperature damage to components), achieving uniform mixing and drying with a double cone rotary structure (without local overheating), and being able to adapt to various forms of materials such as powder, particles, crystals, etc. Therefore, it is widely used in industries that are sensitive to drying temperature, need to avoid oxidation pollution, or require low residue. Its main application industries and compatible materials are as follows:
1、 Pharmaceutical industry (core application areas)
The pharmaceutical industry has high requirements for the "purity, temperature sensitivity, and residue control" of material drying. The SZG series equipment has become one of the key equipment due to its closed drying process (to avoid pollution) and the ability to achieve efficient drying at low temperatures (40-80 ℃) (reducing the boiling point of water/solvents in a vacuum environment). It is mainly used for:
Drying of raw materials: such as antibiotics (penicillin, cephalosporins, easily decomposed at high temperatures), vitamins (vitamin C, B group, afraid of oxidation), amino acids (lysine, glutamic acid, need to maintain activity), etc;
Drying of traditional Chinese medicine preparations: such as traditional Chinese medicine extracts (Danshen extract, Huangqi extract, high temperature can easily cause the loss of effective ingredients), and traditional Chinese medicine granules (such as Ganmaoling granules, the moisture content should be controlled to ≤ 3%);
Drying of medicinal excipients: such as microcrystalline cellulose and lactose (as fillers for tablets, they need to be dried to low moisture to ensure tablet stability).
2、 Food and food additive industry
The food industry needs to avoid material discoloration, nutrient loss, and microbial growth during the drying process. The low-temperature vacuum characteristics of the SZG series can preserve the flavor and nutrition of materials while meeting food hygiene standards (polishing the inner walls of equipment, easy to clean without dead corners). It is mainly used for:
Functional food ingredients: such as probiotic powder (active probiotics need to be dried at low temperatures to maintain the number of live bacteria), dietary fiber (inulin, konjac glucomannan, to avoid high-temperature degradation);
Food additives: such as sweeteners (aspartame, sucralose, easily decomposed at high temperatures), thickeners (xanthan gum, pectin, need to maintain powder looseness after drying), pigments (natural beta carotene, chlorophyll, afraid of oxidation and fading);
Specialty food drying: such as pre drying before freeze-drying (such as dehydration of fruit chips), seasoning (such as mushroom powder, seafood powder, retaining fresh ingredients).
3、 Chemical industry
In the chemical industry, many materials (such as polymer compounds and catalysts) need to be dried under conditions of "no oxidation, low residue, and anti caking". The SZG series equipment can be adapted for solvent recovery (such as ethanol and acetone) to avoid deterioration caused by material contact with air. It is mainly used for:
Polymer materials: such as nylon resin, polyimide powder (easily cross-linked at high temperatures, requiring low-temperature drying to control molecular weight distribution), plastic masterbatch (such as color masterbatch, avoiding bubbles during injection molding after drying);
Catalysts and additives: such as chemical reaction catalysts (palladium carbon catalysts, molecular sieves, need to be dried to low moisture to ensure catalytic activity), rubber additives (anti-aging agents, accelerators, to avoid oxidation affecting performance);
Chemicals: such as dyes (acid dyes, reactive dyes, afraid of discoloration at high temperatures), pigments (carbon black, need to maintain dispersibility after drying to avoid clumping).
4、 New materials industry
New materials such as battery materials and ceramic materials have strict requirements for the "purity, moisture content, and particle uniformity" of the dried materials. The SZG series has uniform drying characteristics (double cone rotation allows the material to fully contact the heat source) and low residue advantages, which can meet their production needs. It is mainly used for:
Battery materials: such as positive electrode materials for lithium batteries (lithium iron phosphate, ternary materials, moisture should be controlled below 50ppm to avoid battery swelling), negative electrode materials (graphite powder, ensuring conductivity after drying);
Ceramics and inorganic materials: such as ceramic powders (alumina, zirconia powders, prone to agglomeration at high temperatures, requiring low-temperature drying to maintain dispersion), rare earth materials (lanthanum oxide, cerium oxide, afraid of oxidation and requiring high purity);
Polymer composite materials: such as carbon fiber composite precursor and glass fiber reinforced resin (to avoid defects during composite material molding after drying).
5、 Pesticide industry
Pesticide raw materials or formulations (such as wettable powders and granules) need to avoid "high-temperature decomposition failure" or "solvent residue pollution of the environment". The SZG series equipment can dry at low temperatures under vacuum, and at the same time recover organic solvents (such as toluene and xylene) used in production, which meets environmental protection requirements and is mainly used for:
Drying of pesticide raw materials: such as insecticides (imidacloprid, chlorpyrifos, which are prone to decomposition at high temperatures leading to reduced efficacy) and herbicides (glyphosate, which need to be dried to a stable powder state);
Pesticide formulation processing: such as pre drying of pesticide suspensions (removing excess moisture to ensure formulation stability), and water dispersible granule raw materials (avoiding clumping after drying to ensure dispersibility).
6、 Mineral and metallurgical industry (niche but critical applications)
In the processing of some high value-added minerals, it is necessary to dry mineral powder (such as rare metal powder) at low temperatures to avoid component oxidation or structural changes caused by high temperatures. The SZG series equipment can be used for:
Drying of rare metal mineral powder: such as tungsten powder and molybdenum powder (which are prone to oxidation at high temperatures and generate oxides, affecting the purity of subsequent smelting);
Mineral powders: such as kaolin and talc powder (used for ceramics or coatings, which need to maintain fineness and dispersibility after drying).

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