Industry method of oil backfilling by manufacturing alkaline residue after the entire cleaning of the alkaline residue pool

Abstract

The invention relates to a method for completely clearing out caustic dross from a caustic dross pool so as to make industrial backfilling. The method is characterized in that the method comprises the following steps that: a level dam exceeding backfill scale height is enclosed around a backfill site; a construction site is cleaned up at the bottom of a caustic dross pool; backfilling raw materials such as caustic dross, phosphorite metal ore, natural soil and fly ash, etc. are flushed out to form slurry by a water gun by means of a high-pressure water pump; according to the percentage of caustic dross and the raw materials used to make backfilling, the slurry is conveyed to and mixed inside a pipe through a slurry pump pipe, and then is fully mixed to form a backfilling material through the slurry pump; moreover, the backfilling material is conveyed to a backfill site; the surface of the backfilling material is dried in the sun after water is discharged; then, a channel is dug by an excavator with the bottom of the channel provided with a water pump to realize drainage; therefore, the backfilling is leveled and pressed compact by a bulldozer after the backfilling is dewatered to reach backfilling hardness. The method has the advantages that: the method makes full use of resources and changes waste materials into things of value; moreover, the method has simple process, fewer links and low production cost.

Description

Technical field: [0001] The invention relates to a method for making industrial backfill soil from alkali slag in a completely cleaned alkali slag pool, in particular to a method for making industrial backfill soil from alkali slag, waste quicklime and fly ash discharged from a large alkali factory. Backfill coastal saline-alkali land, sun-dried salt ponds and low-lying land into general industrial land and urban land. Background technique: [0002] A large-scale alkali plant with an annual output of one million tons occupies several thousand acres of land for its alkali slag ponds, fly ash ponds, and waste quicklime ponds, of which: [0003] 1. Alkali slag: The main component is lime milk produced by the ammonia-alkali method. The lime milk contains brine and it is difficult to seep out naturally. After decades in the pool, the alkali slag in the pool will not dry naturally like silt. [0004] 2. Waste quicklime: the main component is calcium oxide, which is used to produc...

AI Technical Summary

Problems solved by technology

[0006] The large-scale alkali factories in our country are all located in the coastal areas, and the alkali slag ponds and land occupation amount to several thousand mu. Due to the lack of suitable technical means to deal with the alkali slag in the alkali slag ponds, the alkali slag ponds that have been around for twenty years have not been cleaned up to now, making the land The amount of occupation is increasing, and most of the large alkali plants are connected with power plants and lime plants, surrounded by industrial towns, and the land resources are very

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