Supported Materials
New energy & battery materials drying equipment selection: form, heat sensitivity and recommended machine for 17 materials (Battery-grade lithium carbonate, Lithium iron phosphate, NCM precursor and others), with the full line configuration and trial run points.
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17 material(s) listed for this industry.
New energy & battery materials 17 items
| Material | Form | Heat sensitivity | Recommended dryer | Alternative | Selection notes |
|---|---|---|---|---|---|
| Battery-grade lithium carbonate | Powder | Moderate | Electric Heating Dryer | Rotary Dryer |
Tight limits on moisture and metallic contamination; close temperature control required. Powder moves only if the hot air carries it, so what decides the route is whether the air has enough momentum and whether the duct is sized right, not whether the material flows by itself. At high temperature this material loses water first and discolours later, so holding the temperature is enough, but the combination of temperature and time still has to be confirmed by trial run. Having no flame matters for combustible dust and flammable materials, but the running electricity cost is a long term number and belongs in the same calculation. Powder that sits for long enough will bridge, so the feed end needs a breaker or forced feeding; every blockage stops the line. The alternative is a rotary dryer, which is the route to switch to when the material needs a longer residence time or the line is scaling up to tens of tonnes a day. Send a sample with the enquiry. The moisture and bulk density of the actual battery-grade lithium carbonate decide the machine size far more than the name does.
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| Lithium iron phosphate LFP | Powder | Moderate | Electric Heating Dryer | Flash Airflow Dryer |
Fine and dusty; prevent cross-contamination. If the powder is still wet when it enters the machine it will ball up in the conveying section; by the time it reaches the heat exchange zone it has to be loose, or even good hot air cannot move it. The material tolerates moderate to high temperature for a while but not a long dwell, so the process needs temperature margin built in. Electric heating removes the heat source problem, but the energy cost per tonne of water has to be worked out; it suits small batches and heat sensitive material. Powder that sits for long enough will bridge, so the feed end needs a breaker or forced feeding; every blockage stops the line. The alternative is a flash airflow dryer, which is the route to switch to when throughput is modest and the material needs a shorter heating time. Send a sample with the enquiry. The moisture and bulk density of the actual lithium iron phosphate decide the machine size far more than the name does.
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| NCM precursor | Powder | Moderate | Electric Heating Dryer | Rotary Dryer |
Sensitive to temperature and atmosphere; the temperature must be held steady. Powder has a low bulk density and takes up a lot of volume for the same weight, so drum size is usually worked out backwards from the throughput rather than from the material. It is a material that can be heated but must not be baked, so the set temperature needs margin, and final moisture depends on moisture temperature and drying intensity as well. Electric heating has no flame and no flue gas, and it controls temperature quickly and cleanly, which suits sites without gas and duties with a cleanliness requirement. Powder that sits for long enough will bridge, so the feed end needs a breaker or forced feeding; every blockage stops the line. The alternative is a rotary dryer, which is the route to switch to when the material needs a longer residence time or the line is scaling up to tens of tonnes a day. When ordering, ask for NCM precursor by name and give the actual moisture and bulk density of the incoming material, so the machine size can be fixed in one pass.
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| Graphite anode material | Powder | Not heat-sensitive | Rotary Dryer | Flash Airflow Dryer |
Light and dusty; sealing and dust collection are essential. Powder has a low bulk density and takes up a lot of volume for the same weight, so drum size is usually worked out backwards from the throughput rather than from the material. Good heat tolerance means it can be dried fast and hot or slow and cool, and the choice between the two is a trade between energy cost and capital investment. A rotary dryer lifts and drops the material repeatedly with flights to form a curtain, so the material stays inside for minutes to tens of minutes, which suits heavy, heat tolerant material. Dust settling in the ducts and in the dust collector changes the resistance, the air volume drops with it, and the cleaning cycle has to be part of the process. The alternative is a flash airflow dryer, which is the route to switch to when throughput is modest and the material needs a shorter heating time. Send a sample with the enquiry. The moisture and bulk density of the actual graphite anode material decide the machine size far more than the name does.
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| Petroleum coke | Powder | Not heat-sensitive | Rotary Dryer | Flash Airflow Dryer |
High output with continuous operation; drum size is set by throughput. Powder moves only if the hot air carries it, so what decides the route is whether the air has enough momentum and whether the duct is sized right, not whether the material flows by itself. There is little restriction on temperature for this material; the real constraints are throughput and energy cost, so the process parameters can be opened up a little. Throughput on a drum is set by working volume and residence time together, so the denser and more solid the material, the more the drum can hold. Dust settling in the ducts and in the dust collector changes the resistance, the air volume drops with it, and the cleaning cycle has to be part of the process. The alternative is a flash airflow dryer, which is the route to switch to when throughput is modest and the material needs a shorter heating time. If the incoming grade of petroleum coke is not the one quoted before, the parameters have to be given again rather than carried over from an earlier order.
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| Battery-grade lithium hydroxide | Powder | Moderate | Electric Heating Dryer | Rotary Dryer |
Strongly hygroscopic; prevent moisture regain at the discharge end. If the powder is still wet when it enters the machine it will ball up in the conveying section; by the time it reaches the heat exchange zone it has to be loose, or even good hot air cannot move it. The material tolerates moderate to high temperature for a while but not a long dwell, so the process needs temperature margin built in. Electric heating removes the heat source problem, but the energy cost per tonne of water has to be worked out; it suits small batches and heat sensitive material. Powder that sits for long enough will bridge, so the feed end needs a breaker or forced feeding; every blockage stops the line. The alternative is a rotary dryer, which is the route to switch to when the material needs a longer residence time or the line is scaling up to tens of tonnes a day. Do not describe the material only as powder or granules: give the measured moisture and bulk density for battery-grade lithium hydroxide, because two materials of the same form can differ by a whole machine size.
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| Conductive carbon black | Powder | Not heat-sensitive | Flash Airflow Dryer | Electric Heating Dryer |
Light powder; pneumatic conveying is more uniform. If the powder is still wet when it enters the machine it will ball up in the conveying section; by the time it reaches the heat exchange zone it has to be loose, or even good hot air cannot move it. The material itself is heat tolerant, so the ceiling comes from the equipment and from by-products rather than from the material, which means heat can be supplied generously and throughput pushed up. The advantages of flash are the short heating time and the minimal mechanical action on the material; the cost is that throughput is capped by air volume and duct size, and very large lines still need a drum. Dust settling in the ducts and in the dust collector changes the resistance, the air volume drops with it, and the cleaning cycle has to be part of the process. The alternative is an electrically heated dryer, which is the route to switch to where gas is inconvenient or there is a hard requirement on cleanliness and open flame. When ordering, ask for conductive carbon black by name and give the actual moisture and bulk density of the incoming material, so the machine size can be fixed in one pass.
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| Ceramic-coated alumina | Powder | Not heat-sensitive | Electric Heating Dryer | Flash Airflow Dryer |
Narrow particle-size distribution required; avoid secondary agglomeration during drying. Powder has a low bulk density and takes up a lot of volume for the same weight, so drum size is usually worked out backwards from the throughput rather than from the material. Good heat tolerance means it can be dried fast and hot or slow and cool, and the choice between the two is a trade between energy cost and capital investment. Electric heating has no flame and no flue gas, and it controls temperature quickly and cleanly, which suits sites without gas and duties with a cleanliness requirement. Dust settling in the ducts and in the dust collector changes the resistance, the air volume drops with it, and the cleaning cycle has to be part of the process. The alternative is a flash airflow dryer, which is the route to switch to when throughput is modest and the material needs a shorter heating time. When ordering, ask for ceramic-coated alumina by name and give the actual moisture and bulk density of the incoming material, so the machine size can be fixed in one pass.
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| Battery black mass | Powder | Not heat-sensitive | Rotary Dryer | Electric Heating Dryer |
Electrolyte residue; ventilation and explosion protection required. Powder moves only if the hot air carries it, so what decides the route is whether the air has enough momentum and whether the duct is sized right, not whether the material flows by itself. There is little restriction on temperature for this material; the real constraints are throughput and energy cost, so the process parameters can be opened up a little. Throughput on a drum is set by working volume and residence time together, so the denser and more solid the material, the more the drum can hold. Dust settling in the ducts and in the dust collector changes the resistance, the air volume drops with it, and the cleaning cycle has to be part of the process. The alternative is an electrically heated dryer, which is the route to switch to where gas is inconvenient or there is a hard requirement on cleanliness and open flame. Send a sample with the enquiry. The moisture and bulk density of the actual battery black mass decide the machine size far more than the name does.
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| Electrolyte additive | Powder | Heat-sensitive | Flash Airflow Dryer | Electric Heating Dryer |
Heat-sensitive and hygroscopic; short exposure, then seal immediately. Powder moves only if the hot air carries it, so what decides the route is whether the air has enough momentum and whether the duct is sized right, not whether the material flows by itself. Heat sensitive material has a narrow process window, so inlet temperature and residence time can only be set conservatively and throughput usually has to be raised later, once trial run data is in. An airflow line is demanding about the state of the feed: what enters must already be a granule or powder that can be conveyed, because too much moisture makes it cake in the conveying section. Local overheating is the danger with heat sensitive powder: a layer stuck to the wall keeps heating one spot, so the flights and the air volume have to keep the bed from clinging. The alternative is an electrically heated dryer, which is the route to switch to where gas is inconvenient or there is a hard requirement on cleanliness and open flame. Send a sample with the enquiry. The moisture and bulk density of the actual electrolyte additive decide the machine size far more than the name does.
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| Carbon nanotube CNT | Powder | Not heat-sensitive | Flash Airflow Dryer | Rotary Dryer |
Nano-scale light powder; a closed airflow route prevents escape. If the powder is still wet when it enters the machine it will ball up in the conveying section; by the time it reaches the heat exchange zone it has to be loose, or even good hot air cannot move it. The material itself is heat tolerant, so the ceiling comes from the equipment and from by-products rather than from the material, which means heat can be supplied generously and throughput pushed up. The advantages of flash are the short heating time and the minimal mechanical action on the material; the cost is that throughput is capped by air volume and duct size, and very large lines still need a drum. Dust settling in the ducts and in the dust collector changes the resistance, the air volume drops with it, and the cleaning cycle has to be part of the process. The alternative is a rotary dryer, which is the route to switch to when the material needs a longer residence time or the line is scaling up to tens of tonnes a day. Send a sample with the enquiry. The moisture and bulk density of the actual carbon nanotube decide the machine size far more than the name does.
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| Boron nitride BN | Powder | Not heat-sensitive | Flash Airflow Dryer | Rotary Dryer |
Thermally conductive filler, fine and light. Powder moves only if the hot air carries it, so what decides the route is whether the air has enough momentum and whether the duct is sized right, not whether the material flows by itself. There is little restriction on temperature for this material; the real constraints are throughput and energy cost, so the process parameters can be opened up a little. An airflow line is demanding about the state of the feed: what enters must already be a granule or powder that can be conveyed, because too much moisture makes it cake in the conveying section. Dust settling in the ducts and in the dust collector changes the resistance, the air volume drops with it, and the cleaning cycle has to be part of the process. The alternative is a rotary dryer, which is the route to switch to when the material needs a longer residence time or the line is scaling up to tens of tonnes a day. Do not describe the material only as powder or granules: give the measured moisture and bulk density for boron nitride, because two materials of the same form can differ by a whole machine size.
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| PVDF resin | Powder | Heat-sensitive | Flash Airflow Dryer | Electric Heating Dryer |
Fluoropolymer, heat-sensitive; keep a margin on the temperature limit. If the powder is still wet when it enters the machine it will ball up in the conveying section; by the time it reaches the heat exchange zone it has to be loose, or even good hot air cannot move it. The heating time for this material is measured in seconds; the hot air can run hot, but the material temperature itself has to be held down, because past the threshold it discolours, denatures or cakes. The advantages of flash are the short heating time and the minimal mechanical action on the material; the cost is that throughput is capped by air volume and duct size, and very large lines still need a drum. Local overheating is the danger with heat sensitive powder: a layer stuck to the wall keeps heating one spot, so the flights and the air volume have to keep the bed from clinging. The alternative is an electrically heated dryer, which is the route to switch to where gas is inconvenient or there is a hard requirement on cleanliness and open flame. Send a sample with the enquiry. The moisture and bulk density of the actual PVDF resin decide the machine size far more than the name does.
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| Synthetic graphite | Powder | Not heat-sensitive | Flash Airflow Dryer | Rotary Dryer |
Anode precursor, fine powder; the airflow route is more efficient. If the powder is still wet when it enters the machine it will ball up in the conveying section; by the time it reaches the heat exchange zone it has to be loose, or even good hot air cannot move it. The material itself is heat tolerant, so the ceiling comes from the equipment and from by-products rather than from the material, which means heat can be supplied generously and throughput pushed up. The advantages of flash are the short heating time and the minimal mechanical action on the material; the cost is that throughput is capped by air volume and duct size, and very large lines still need a drum. Dust settling in the ducts and in the dust collector changes the resistance, the air volume drops with it, and the cleaning cycle has to be part of the process. The alternative is a rotary dryer, which is the route to switch to when the material needs a longer residence time or the line is scaling up to tens of tonnes a day. When ordering, ask for synthetic graphite by name and give the actual moisture and bulk density of the incoming material, so the machine size can be fixed in one pass.
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| Iron phosphate | Powder | Moderate | Flash Airflow Dryer | Rotary Dryer |
Cathode precursor; control temperature to prevent oxidation. If the powder is still wet when it enters the machine it will ball up in the conveying section; by the time it reaches the heat exchange zone it has to be loose, or even good hot air cannot move it. The material tolerates moderate to high temperature for a while but not a long dwell, so the process needs temperature margin built in. The advantages of flash are the short heating time and the minimal mechanical action on the material; the cost is that throughput is capped by air volume and duct size, and very large lines still need a drum. Powder that sits for long enough will bridge, so the feed end needs a breaker or forced feeding; every blockage stops the line. The alternative is a rotary dryer, which is the route to switch to when the material needs a longer residence time or the line is scaling up to tens of tonnes a day. If the incoming grade of iron phosphate is not the one quoted before, the parameters have to be given again rather than carried over from an earlier order.
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| Battery-grade manganese sulfate | Powder | Moderate | Flash Airflow Dryer | Rotary Dryer |
Battery material; avoid moisture pickup and metallic contamination. If the powder is still wet when it enters the machine it will ball up in the conveying section; by the time it reaches the heat exchange zone it has to be loose, or even good hot air cannot move it. The material tolerates moderate to high temperature for a while but not a long dwell, so the process needs temperature margin built in. The advantages of flash are the short heating time and the minimal mechanical action on the material; the cost is that throughput is capped by air volume and duct size, and very large lines still need a drum. Powder that sits for long enough will bridge, so the feed end needs a breaker or forced feeding; every blockage stops the line. The alternative is a rotary dryer, which is the route to switch to when the material needs a longer residence time or the line is scaling up to tens of tonnes a day. Do not describe the material only as powder or granules: give the measured moisture and bulk density for battery-grade manganese sulfate, because two materials of the same form can differ by a whole machine size.
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| Flake graphite | Flake | Not heat-sensitive | Rotary Dryer | Flash Airflow Dryer |
Flaky structure; the drum route better preserves the flake shape. Flakes bridge easily, so the feed section needs a disintegrator or forced feeding; once the material balls up and blocks the inlet, the best hot air in the building is wasted. The material itself is heat tolerant, so the ceiling comes from the equipment and from by-products rather than from the material, which means heat can be supplied generously and throughput pushed up. The drum route does not care about material form: lumps, paste and fibre all go in, at the cost of a large footprint and high initial investment. Too much tumbling breaks flakes, so the flights have to support them and the speed should not be high. The alternative is a flash airflow dryer, which is the route to switch to when throughput is modest and the material needs a shorter heating time. If the incoming grade of flake graphite is not the one quoted before, the parameters have to be given again rather than carried over from an earlier order.
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Recommendations above are a selection direction based on material form, heat sensitivity and throughput. Capacity varies with the material, the initial moisture content and the target final moisture, and the formal figures come from a trial run.
Four steps to a selectionHow to choose
- Material form Powder, granule and flake material can be carried in an air stream; blocky, paste-like and fibrous material has to be tumbled inside a drum.
- Heat sensitivity This comes first. Where the material is heat-sensitive and its form allows air conveying, a flash airflow dryer is the natural choice — regardless of output, because exposure to heat is measured in seconds. Material that tolerates heat can be dried more slowly and at lower cost.
- Throughput and budget Where budget and batch size matter more than output, a batch rotary dryer carries relatively low capital cost and suits a small plant or workshop. For high output, a continuous rotary dryer feeds and discharges at the same time and runs non-stop.
- Environment and energy Where emissions are constrained or there is no steam supply, electric and electromagnetic heating avoids an open flame and responds faster.
Where the material is corrosive (acidic, chloride-bearing, saline and so on), the parts in contact can be specified in stainless steel: 201 / 304 / 316L / 430 / 2205 duplex and other grades to order.
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Material · Selection · Trial run