On-line clearing method of dilute acid pipe scales in phosphate ore magnesium-removing and ore-dressing production

Abstract

The invention aims to provide an on-line clearing method of dilute acid pipe scales in phosphate ore magnesium-removing and ore-dressing production and solves the problem in the prior art that the manual cleaning of a dilute acid pipe is time-consuming and labor-consuming in the phosphate ore magnesium-removing and ore-dressing production. The on-line clearing method comprises the following steps: configuring cleaning liquid composed of sulfuric acid and water in a dilute acid configuration tank, wherein the volume ratio of the sulfuric acid to the water is 1:(5-20); then introducing low-pressure steam in the dilute acid configuration tank to heat; conveying the heated cleaning liquid into a dilute acid pipe by using a conveying pump to clean under the situation of no parking. The on-line clearing method has the benefits that the on-line clearing of the scales is realized, no pipe needs to be disassembled, no investment is required, the maneuverability is realized, and no extra equipment needs to be arranged; the scale removal is more obvious, the cleaning is required once a month, and time and labor are saved.

Description

technical field [0001] The invention relates to the field of mineral processing of phosphate rock, in particular to an online scaling removal method for dilute acid pipelines in the production of magnesium removal and mineral processing of phosphate rock. Background technique [0002] Phosphate ore beneficiation to remove magnesium is one of the main beneficiation methods in the modern ammonium phosphate production industry. The beneficiation method usually adopts the "reverse flotation" method for beneficiation. The return water of the phosphogypsum slag field is used to dilute sulfuric acid as a flotation adjustment agent, and the backwater of the phosphogypsum slag field contains a large amount of Ca, Mg, Fe, Al, Si, etc. A large number of impurity ions react with sulfuric acid to form complex double salts that adhere to the pipe wall, causing serious scaling in the pipe, causing changes in the flow rate of the regulator, and affecting the flotation effect. In order to r...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an on-line cleaning method for dilute acid pipeline scaling in the production of phosphate rock for magnesium removal ore dressing, so as to solve the problem of time-consuming and laborious manual cleaning of dilute acid pipeline in the production of phosphate rock for magnesium removal ore dressing in the prior art

Images