Process of preparing a cemented paste backfill material
US12286377B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jun 10, 2020 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | May 7, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process of preparing a cemented paste backfill material, the material including ground mine tailings, a hydraulic binder and water, wherein the solids content of the backfill material is 70-82 wt.-%, the process including a) providing a dry premix, the premix including the hydraulic binder, a superplasticizer and optionally a defoaming agent, b) mixing the dry premix with the ground mine tailings and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.