PATENT CLAIM ANALYSIS

Application Number: 15916668
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["423", "062000"]

Abstract:
A vanadium recovery approach utilizes oil fly ash (OFA), in contrast to coal fly ash, for separation and recovery of vanadium. OFA is first carbon burned to reduce the volume for recycling, and also to provide a fuel for other industrial processes. Following an almost 90% weight reduction from carbon burning, the remaining material includes about 18% vanadium. A salt roasting performed at the same temperature (about 650° C.) as the carbon burning allows use of the same oven or furnace, reducing heat requirements for the overall process. Salt roasting generates a water-soluble material from which a water leaching process yields a vanadium leach solution containing recovered vanadium, avoiding a need for caustic or volatile leaching agents. Ammonium metavanadate is precipitated from the vanadium leach solution through addition of ammonium sulfate, and a calcination process used to generate vanadium oxide (V 2 O 5 ).

Claim (Index 11):
The method of  claim 3  wherein leaching vanadium results in a vanadium leach solution having at least a 90% purity.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 90.0
- Lexical Diversity: 1.65
- Patent Class: 423.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['13582479', '15125114', '15617589', '14425129', '15863193']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7713932765604112
- 35 USC 102 Novelty (BERT): 0.4716340714009169
- Combined Prediction Score: 0.7414173560444618
- Mean Citation Score: 154.146368
- Max Citation Score: 157.31673
- Similarity Product: 117.18867160510716

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test