Leaching-seepage process of sodium sulfate in thenardite tailing stack

A leaching-seepage process of sodium sulfate in a thenardite tailings stack, comprising the following steps:

• step 1, providing a mud reserve pit next to the thenardite tailings stack, and ditching a drainage ditch next to a bottom of the thenardite tailings stack, so that a flow direction of the drainage ditch faces the mud reserve pit;
• step 2, ditching a leaching pit on the thenardite tailings stack, injecting water into the leaching pit, and letting the water stand to leach thenardite tailings;
• step 3, injecting the water into the leaching pit at intervals in the leaching process, and leaching the thenardite tailings with the water, so that a percolating fluid gradually flows out from the bottom of the thenardite tailings stack;
• step 4, flushing the bottom of the thenardite tailings stack with a spray gun, to mix the percolating fluid flowing out from the bottom of the thenardite tailings stack with mud at the bottom of the thenardite tailings stack to flow into the drainage ditch;
• and
• step 5, allowing the percolating fluid and the mud in the drainage ditch to inflow into the mud reserve pit, settling naturally in the mud reserve pit, and extracting a supernatant from the mud reserve pit by a water pump to obtain refined Glauber's salt water.