2 results about "Cyanide level" patented technology

The application discloses a cyanide-containing slag tailing pond groundwater environment risk early warning system, a groundwater monitoring well subsystem comprises a plurality of groundwater monitoring wells; a timing sampling control subsystem is used for controlling the pumping time, flow and frequency of a water pump in each groundwater monitoring well; a color reaction subsystem comprises a color developing device and is used for monitoring the color developing reaction of the groundwater sample; a color sensing subsystem comprises a light source and a color sensor, the light source is irradiated towards the color developing device, and the color sensor is used for collecting the emergent light signal of the color developing device after the color developing reaction; a central control platform comprises an early warning subsystem and an emergency disposal response subsystem, the early warning subsystem receives the color sensor signal and divides the risk grade according to the obtained signal; the emergency disposal response subsystem executes corresponding detection and repair responses according to the risk grade made by the early warning subsystem; the application realizes the rapid detection of the cyanide content in the groundwater around the cyanide-containing slag tailing pond and the feedback and early warning of the environmental pollution risk grade.

This invention relates to a method for preparing sulfur concentrate powder using high-silica cyanide tailings, belonging to the field of gold cyanide tailings treatment, and includes the following steps: (1) adding water to the high-silica cyanide tailings to make a slurry, quickly adjusting the pH of the slurry to 1-2, and then adding a composite cyanide removal agent under stirring and dispersion aeration conditions; (2) acidifying the aerated slurry, adding an adjuster to adjust the pH of the slurry back to 7-8; (3) adding a collector and a frother to the pretreated material and performing flotation; (4) the pyrite-containing slurry particles float with the bubbles, are scraped off by a scraper, and after being carefully selected, sulfur concentrate slurry is obtained, and after pressure filtration and drying, sulfur concentrate is obtained; (5) the slurry after scavenging flows into the tailings slurry tank, and after pressure filtration and drying, tailings are obtained. The method of this invention has a good cyanide removal effect, and the cyanide content in the treated tailings and sulfur concentrate is less than 0.5 mg / kg, reducing the hazardous characteristics of tailings to general solid waste, and realizing the complete resource utilization of waste.