Method of renovating and afforesting slag mountain with humic acid substance
US10493507B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2019 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Mar 5, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B2400/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method utilizing a humic acid substance for renovating and afforsesting slag is provided. A humic acid substance may be utilized for passivation, adsorption, reduction, chelation and immobilization of harmful heavy metal elements in slag, for example, Cr, As, Cd, Ni, Pb, Ba, Hg, Co, Se, Ag and Be, and aggregating the slag, thereby detoxifying the slag and producing artificial earth. The artificial earth may be used in combination with a carrier bacterial fertilizer to continuously produce the active humic acid substance, achieving an effect similar to the combination of blood transfusion and blood production, thereby forming a high-quality artificial soil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.