HFF-1170

HFF-1170 Dispersible carbon source for lithium iron phosphate

Product introduction

HFF-1170 is a new material with dual functions of dispersant and carbon source, which is used in the grinding process of lithium iron phosphate precursor production by solid-state method. This product can significantly reduce the viscosity of the precursor slurry, increase the effective solid content to more than 50%, shorten the grinding time, improve the performance of spray drying, and reduce the particle size of primary particles.

HFF-1170 increases the solid content of iron phosphate precursor slurry to more than 50%, while at the same time reducing the viscosity of the slurry to less than 300 mPa s, maintaining storage stability. The addition of HFF-1170 also reduces the polishing time by approximately 20% to 40%, improving the production efficiency of the polishing and spray drying processes.

HFF-1170 is designed to partially replace the glucose carbon source in a 1:1 ratio, with a carbon residue rate comparable to that of glucose, improved electrical conductivity, and better processability of the final LFP powder. These properties make HFF-1170 especially suitable for the grinding process in the production of lithium iron phosphate precursors by solid-state method, significantly reducing production costs.

Performance characteristics

• Increase the solid content of lithium iron phosphate precursor slurry to over 50%

• Reduce polishing time by 20% to 40%

• Reduces the viscosity of the slurry and provides excellent fluidity

• Easier spray drying, improved drying efficiency and reduced powder clumping

• When glucose was substituted for the carbon source at a 1:1 ratio, the residual carbon rate was the same and the conductivity was slightly improved.

• A 70% aqueous solution that is VOC-free and easy to use

Application areas

• Preparation of lithium iron phosphate precursor slurry with high effective solids content and low viscosity

Reference process for partial glucose replacement

1. 2 kilograms of HFF-1170 mixed with 44.4 kilograms of water

2. Add 10 kilograms of lithium carbonate under shear conditions

3. Add 40 kilograms of iron phosphate under shear conditions

4. After mixing evenly, add polishing zirconia beads (mixture of large and small).

5. Polishing under circulating cooling conditions

6. Determine particle size < 500nm

• YES → Next step

• NO → Polish again under circulating cooling conditions

1. Add 3.6 kilograms of glucose

2. Polish for another 15-30 minutes

3. Filter through a screen filter to obtain iron phosphate

4. Lithium precursor slurry, viscosity < 300mPas

* In this example, to produce 100 kg of LFP precursor slurry with 50% solids content, it is recommended to add 10% carbon source, of which 2.8% should be HFF-1170 and the remaining 7.2% should be glucose (all solids to solids calculations).

Cost Analysis (per ton of lithium iron phosphate precursor)

item	40% slurry	55% slurry	Cost reduction
Slurry production capacity investment	2.5 ton	1.82 tons	27.2%
Energy consumption (estimated per 100kWh/ton of water)	150kWh	82kWh	46%
Polishing work time cost	Approx. 120 minutes	Approximately 90 minutes	twenty five%
Equipment wear and tear (assuming 100% normal polishing)	100%	75%	twenty five%

statement

The material provided herein, especially suggestions regarding the use of our products, are based on our knowledge and experience. If variations in the materials used or working conditions are beyond our knowledge and control, we strongly recommend that detailed tests be carried out to verify whether the products are suitable for the requirements of your process and intended use.