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US 5,627,133 AGranted
Environmentally beneficial soil amendment
AssigneeSorbent Technologies Corporation
InventorSidney G. Nelson
Life of this patent
Estimating the term…
Abstract
A soil amendment for reclaiming mine spoils and for enriching agricultural, horticultural, and turf grass soils while reducing the release of heavy metals into the environment comprising a liming agent, expanded vermiculite or perlite particles, fly ash, and a reaction product generated by exposing a calcium compound in a duct-injection process to a combustion flue-gas stream containing sulfur dioxide.
Claims3
A soil amendment for reclaiming and enriching soils, comprising:
- an expanded mineral support selected from the group consisting of vermiculite, perlite, and mixtures thereof, and making up from 10 to 40 percent by weight of said amendment;
- a liming agent selected from the group consisting of calcium hydroxide, calcium carbonate, calcium oxide, and mixtures thereof and making up from 10 to 50 percent by weight of said amendment;
- calcium-sulfur-oxygen compounds making up from 10 to 40 percent by weight of said amendment;
- and
- fly ash having a size of 28 mesh or less and making up from 0 to 50 percent by weight of said amendment;
- wherein said mineral supports, liming agents, calcium-sulfur-oxygen compounds, and fly ash are essentially derived from the waste materials of a duct-injection flue gas desulfurization and particulate control process.
3 more elements
Dependencies are inferred from the claim text.