Unlock instant, AI-driven research and patent intelligence for your innovation.

Environmental protection treatment process of alumina red mud tailings and feldspar tailings mixture

A kind of environmental protection treatment, aluminum oxide technology, applied in the direction of solid waste removal, etc., can solve the problems that cannot be promoted on a large scale, the high cost of acid wastewater treatment, etc., and achieve the effect that is conducive to large-scale production

Active Publication Date: 2017-06-30
山东盛日奥鹏环保新材料集团股份有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Quartz sand is widely used in architectural ceramics, daily-use ceramics, and glass industries. Due to the depletion of feldspar resources for producing quartz sand, feldspar containing impurities is generally treated by flotation and pickling, but the feldspar produced by pickling A large amount of acid-containing wastewater is expensive to dispose of and cannot be promoted on a large scale

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An environmentally friendly treatment process for alumina red mud tailings and feldspar tailings mixture, comprising the following steps:

[0031] (1) The alumina red mud is filtered through a filter press, the liquid part is red mud alkaline waste liquid, and the solid part is mixed with alumina red mud tailings and feldspar tailings at a mass ratio of 1:5; the mixture enters The first storage yard was placed for 18 hours, and turned over to the second storage yard with a forklift for 10 hours.

[0032] (2) add respectively in all reaction tanks to the mixed material that step (1) obtains, add dilute hydrochloric acid and cosolvent (mass ratio is the NaCl and MgCl of 7:1 in the first reaction tank) 2 The mixture) is processed, the concentration of dilute hydrochloric acid is 30%, and the graphite heat exchanger is used to heat it to 55°C for 24 hours to react. The mixture of dilute hydrochloric acid, co-solvent, alumina red mud tailings and feldspar tailings The mass ...

Embodiment 2

[0038] An environmentally friendly treatment process for alumina red mud tailings and feldspar tailings mixture, comprising the following steps:

[0039] (1) The alumina red mud is filtered through a filter press, the liquid part is red mud alkaline waste liquid, and the solid part is mixed with alumina red mud tailings and feldspar tailings at a mass ratio of 1:8; the mixture enters The first storage yard was placed for 20 hours, and turned over to the second storage yard with a forklift for 10 hours.

[0040] (2) add respectively in all reaction tanks to the mixed material that step (1) obtains, add dilute hydrochloric acid and cosolvent (mass ratio is 10:1 NaCl and MgCl 2 The mixture) is treated, the concentration of dilute hydrochloric acid is 35%, and the graphite heat exchanger is used to heat it to 55°C for 22 hours to react. The mixture of dilute hydrochloric acid, co-solvent, alumina red mud tailings and feldspar tailings The mass ratio is 30:0.12:75, and the materia...

Embodiment 3

[0046] An environmentally friendly treatment process for alumina red mud tailings and feldspar tailings mixture, comprising the following steps:

[0047] (1) The alumina red mud is filtered through a filter press, the liquid part is red mud alkaline waste liquid, and the solid part is mixed with alumina red mud tailings and feldspar tailings at a mass ratio of 1:9; the mixture enters The first storage yard was placed for 15 hours, and turned over to the second storage yard with a forklift for 10 hours.

[0048] (2) add respectively in all reaction tanks to the mixed material that step (1) obtains, add dilute hydrochloric acid and cosolvent (mass ratio is 5:1 NaCl and MgCl 2The mixture) is treated, the concentration of dilute hydrochloric acid is 25%, and the graphite heat exchanger is used to heat it to 55°C for 26 hours to react. The mixture of dilute hydrochloric acid, co-solvent, alumina red mud tailings and feldspar tailings The mass ratio is 25:0.08:65, and the material ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
whitenessaaaaaaaaaa
Login to View More

Abstract

The invention relates to an environment-friendly treatment process for alumina red mud tailings and feldspar tailings mixture. Mix alumina red mud tailings and feldspar tailings, add dilute hydrochloric acid and co-solvent for treatment, after the treatment, the material is layered, and the solid obtained by layering is washed with water to obtain quartz sand; the liquid obtained by layering is mixed with red The mud alkaline waste liquid reacts for treatment. The invention comprehensively treats alumina red mud tailings and feldspar tailings, and can obtain high-quality quartz sand after treatment, and neutralizes the acidic waste liquid generated during the treatment process with the alkaline waste liquid of red mud tailings used as raw materials , the obtained liquid can be utilized, does not produce secondary pollution, is non-toxic and environmentally friendly, and is beneficial to large-scale production.

Description

technical field [0001] The invention relates to an environment-friendly treatment process for alumina red mud tailings and feldspar tailings mixture. Background technique [0002] Red mud is the solid waste left after alumina is produced from bauxite. For every ton of alumina produced, 1.0-1.8 tons of red mud are produced at the same time. In recent years, my country's alumina industry has developed rapidly, and red mud has been piled up in large quantities, occupying fertile land and polluting the environment, which has become a public hazard. Red mud tailings are the solid waste left after red mud is optimized to extract useful iron, titanium, and vanadium metals. [0003] Quartz sand is widely used in architectural ceramics, daily-use ceramics, and glass industries. Due to the depletion of feldspar resources for producing quartz sand, feldspar containing impurities is generally treated by flotation and pickling, but the feldspar produced by pickling Disposal of a large ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 方澎
Owner 山东盛日奥鹏环保新材料集团股份有限公司