CN114105507A - Sand washing mud improving method - Google Patents

Abstract

The invention relates to the technical field of sand washing mud treatment, in particular to an improved sand washing mud treatment method which is characterized by comprising the following steps of S10: treating the sand washing mud by a cyclone and a circular sieve in sequence, and coarsely selecting the sand washing mud; s20, adjusting acidity: uniformly adding citric acid into the sand washing slurry after coarse removal to ensure that the ph value in the sand washing slurry is below 5.0; s30, dye preparation: grinding 90% of the coal to 2 μm with a superfine grinder to obtain a dye; s40, adding the dye into the sand washing slurry after acidity adjustment until the mixture of the dye and the sand washing slurry is yellow gray, and stopping adding the dye; the original waste sand washing mud reaches the color and the pH value of the mud for the paperboard, so that the effect that the sand washing mud is suitable for papermaking is realized.

Description

Sand washing mud improving method

Technical Field

The invention relates to the technical field of sand washing mud treatment, in particular to an improved sand washing mud treatment method.

Background

At present, the building sand mainly comprises mountain sand, and the mountain sand is sand obtained by washing original soil dug by a mountain body. The raw soil is washed out of sand to leave slurry which is sand washing slurry.

At present, the treatment mode of sand washing mud slurry is basically discarded or backfilled, but the backfilling is easy to pollute water body; few of the washing mud is used for firing bricks, and the mud added value of the current washing mud for firing bricks is too low.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an improved method for washing sand mud, which enables the originally waste sand mud to reach the color and the pH value of the mud for paper boards, thereby realizing the effect that the sand mud is suitable for paper making.

In order to achieve the purpose of the invention, the invention adopts the technical scheme that:

an improved method for washing sand mud comprises the following steps,

s10, removing coarse materials: treating the sand washing mud by a cyclone and a circular sieve in sequence, and coarsely selecting the sand washing mud;

s20, adjusting acidity: uniformly adding citric acid into the sand washing slurry after coarse removal to ensure that the ph value in the sand washing slurry is below 5.0;

used for meeting the acidity requirement of the paper board mud.

S30, dye preparation: grinding 90% of the coal to 2 μm with a superfine grinder to obtain a dye;

and S40, adding the dye into the sand washing slurry after acidity adjustment until the mixture of the dye and the sand washing slurry is yellow gray, and stopping adding the dye. The invention has the beneficial effects that:

removing the coarse sand washing slurry until the fineness reaches 0-0.0450mm, adding citric acid to adjust the acidity to the ph value below 5.0, and adjusting the sand washing slurry to be yellow gray by using coal powder; the original waste sand washing slurry reaches the color and the pH value of the slurry for the paperboard, and the effect that the sand washing slurry is suitable for papermaking is further realized.

Detailed Description

In order to make the content of the invention easier to clearly understand, the technical solutions in the embodiments of the present invention are clearly and completely described.

An improved method for washing sand mud comprises the following steps,

s10, removing coarse materials: treating the sand washing mud by a cyclone and a circular sieve in sequence, and coarsely selecting the sand washing mud;

preferably, the fineness of the sand washing slurry after coarse removal is 0-0.0450 mm.

S20, adjusting acidity: uniformly adding citric acid into the sand washing slurry after coarse removal to ensure that the ph value in the sand washing slurry is below 5.0;

used for meeting the acidity requirement of the paper board mud.

S30, dye preparation: grinding 90% of the coal to 2 μm with a superfine grinder to obtain a dye;

and S40, adding the dye into the sand washing slurry after acidity adjustment until the mixture of the dye and the sand washing slurry is yellow gray, and stopping adding the dye.

Obtaining the mud meeting the requirements of papermaking filler.

In conclusion, the sand washing slurry is removed to the fineness of 0-0.0450mm, citric acid is added to adjust the acidity to the ph value below 5.0, and coal powder is used to adjust the sand washing slurry to be yellow gray; the original waste sand washing slurry reaches the color and the pH value of the slurry for the paperboard, and the effect that the sand washing slurry is suitable for papermaking is further realized.

The invention is not to be considered as limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (1)

1. An improved method for washing sand mud is characterized by comprising the following steps,

s10, removing coarse materials: treating the sand washing mud by a cyclone and a circular sieve in sequence, and coarsely selecting the sand washing mud;

s20, adjusting acidity: uniformly adding citric acid into the sand washing slurry after coarse removal to ensure that the ph value in the sand washing slurry is below 5.0; the method is used for meeting the acidity requirement of the paper board mud;

s30, dye preparation: grinding 90% of the coal to 2 μm with a superfine grinder to obtain a dye;

and S40, adding the dye into the sand washing slurry after acidity adjustment until the mixture of the dye and the sand washing slurry is yellow gray, and stopping adding the dye.