PATENT CLAIM ANALYSIS

Application Number: 16074155
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-06
Patent Classification: ["075", "743000"]

Abstract:
The present invention discloses a detoxification treatment method for extracting and recycling chromium from hexavalent chromium-containing residues, comprising steps as follows: 1) adding water to the hexavalent chromium-containing residues and mixing uniformly; 2) adding sodium sulfate, sodium chlorate and sulfuric acid to a solution obtained in step 1) and stirring, sufficiently to obtain a mixed liquid; 3) treating the mixed liquid by a hydrothermal method or direct heating; 4) after the heating treatment, naturally cooling a solid-liquid mixture to room temperature for holding; 5) separating solid residues and a chromium-containing supernatant, and washing filtered residues with water and then drying; 6) precipitating the supernatant and the water used for washing the filtered residues with a precipitant CaCl 2 , then centrifugally washing, dewatering and drying the precipitates; and 7) recycling a chromium-containing solution for returning to a work section, or for a treatment of recycling chromium. This method may achieve full-residue utilization with simple process, low cost, quick effect, large treating capacity and complete detoxification.

Claim (Index 5):
The detoxification treatment method for extracting and recycling chromium from hexavalent chromium-containing residues according to  claim 1 , wherein the mixed liquid in step  2 ) has a pH value of 1-5.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 95.0
- Lexical Diversity: 1.92
- Patent Class: 75.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16074104', '10844864', '14001245', '10963607', '14430543']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6694506238879403
- 35 USC 102 Novelty (BERT): 0.5661099706912404
- Combined Prediction Score: 0.6591165585682703
- Mean Citation Score: 234.699964
- Max Citation Score: 433.7501
- Similarity Product: 392.8333875213861

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

Dataset: test