Patent Number: 062917366
Section: claims

1. A process for treating a material that contains a leachable radioactive substances, said process comprising the steps of: contacting said material with technical grade phosphoric acid to produce a mixture; and  curing said mixture for a period of time;  contacting said material with phosphoric acid and a sulfate, hydroxide, chloride, flouride, halide, halite, silicate, alum, Portland cement, calcium oxide or mixture thereof to produce a mixture; and  curing said mixture for a period of time;  contacting said material with phosphoric acid to produce a mixture; and  curing said mixture for a period of time;  contacting said material with phosphoric acid and a mono-, di-, or tribasic phosphate to  produce a mixture; and  curing said mixture for a period of time;  contacting said material with phosphoric acid to produce a mixture; and  curing said mixture for a period of time;  contacting said substance with technical grade phosphoric acid to produce a mixture; and  curing said mixture for a period of time;  contacting said substance with technical grade phosphoric acid; 2. A process for treating a material that contains leachable radioactive substances, said process comprising the steps of: 3. A process for treating a material that contains leachable radioactive substances, said process comprising the steps of: 4. The process according to claim 1, wherein said material treated is a liquid. 5. A process for treating a material that contains leachable radioactive substances, said process comprising the steps of: 6. The process according to claim 2, wherein said sulfate is calcium sulfate, gypsum, sulfuric acid or mixtures thereof. 7. The process according to claim 2, wherein said sulfate is a liquid. 8. The process according to claim 1, wherein said technical grade phosphoric acid is up to 30 percent of the weight of the material treated. 9. A process for treating a material that contains leachable radioactive substances, said process comprising the steps of: 10. A process for treating a material that contains a leachable radioactive substance, said process comprising the steps of: 11. The process according to claim 10, wherein said material treated is selected from the group consisting of soils, debris, sludges, slag, sand, silts, sediments, industrial waste and solid waste materials. 12. The process according to claim 10, further comprising contacting said mixture with a sulfate, hydroxide, chloride, fluoride, halide, halite, silicate, alum, Portland cement, calcium oxide or mixture thereof prior to curing. 13. The process according to claim 10, further comprising contacting said material with a dispersion agent. 14. The process according to claim 10, further comprising contacting said material with water containing radioactive substances. 15. The process according to claim 10, wherein said phosphoric acid is up to 30 percent of the weight of the material treated. 16. A process for treating a material that contains a leachable radioactive substance, said process comprising: 17. The process according to claim 16, further comprising contacting said material with a sulfate, hydroxide, chloride, fluoride, halide, halite, silicate, alum, Portland cement, calcium oxide or mixture thereof. 18. The process according to claim 16, further comprising contacting said material with water containing radioactive substances. 19. The process according to claim 16, wherein said phosphoric acid is up to 30 percent of the weight of the material treated.