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

Method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge

A technology of magnesium sulfate heptahydrate and manganese sulfate, applied in the direction of magnesium sulfate, manganese sulfate, calcium/strontium/barium sulfate, etc., can solve the problems of complex production process and single product, achieve simple process and production equipment, and reduce pollution , Significant social and economic benefits

Inactive Publication Date: 2012-05-23
南通亚伦化工有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods have a certain effect on filter residue treatment, they all require complex production processes, or the products produced are relatively single; there is no relevant report on the method of preparing magnesium sulfate heptahydrate with boron mud to co-produce manganese sulfate and calcium sulfate at present.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge
  • Method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing magnesium sulfate heptahydrate to co-produce manganese sulfate and calcium sulfate with boron mud, is characterized in that, comprises following preparation steps:

[0030] Step A, transfer boron mud 1000Kg to reactor 1, heat with steam, when the temperature reaches 60°C-80°C, keep warm for 1-2 hours; wherein, magnesium oxide 38% (380Kg), silicon dioxide 20% , carbon dioxide 17%, boron oxide 3%, calcium oxide 3% (30Kg), manganese oxide 0.11% (1.1Kg), and others are water.

[0031] Step B, the boron mud heated in step A is carried out solid-liquid separation with the drier centrifuge 2, and the liquid is sent to further processing;

[0032] Step C, sending the boron mud solid separated in step B into the first corrosion-resistant reactor 3, and adding hydrochloric acid solution to the first corrosion-resistant reactor 3 at the same time, stirring to make it react; the boron mud solid and the hydrochloric acid solution with The converted pure mass ...

Embodiment 2

[0039] A method for preparing magnesium sulfate heptahydrate to co-produce manganese sulfate and calcium sulfate with boron mud, is characterized in that, comprises following preparation steps:

[0040] Step A, transfer boron mud 1000Kg to reactor 1, heat with steam, when the temperature reaches 60°C-80°C, keep warm for 1-2 hours; wherein, magnesium oxide 38% (380Kg), silicon dioxide 20% , carbon dioxide 17%, boron oxide 3%, calcium oxide 3% (30Kg), manganese oxide 0.11% (1.1Kg), and others are water.

[0041] Step B, the boron mud heated in step A is carried out solid-liquid separation with the drier centrifuge 2, and the liquid is sent to further processing;

[0042] Step C, sending the boron mud solid separated in step B into the first corrosion-resistant reactor 3, and adding hydrochloric acid solution to the first corrosion-resistant reactor 3 at the same time, stirring to make it react; the boron mud solid and the hydrochloric acid solution with The converted pure mass ...

Embodiment 3

[0049] A method for preparing magnesium sulfate heptahydrate to co-produce manganese sulfate and calcium sulfate with boron mud, is characterized in that, comprises following preparation steps:

[0050] Step A, transfer boron mud 1000Kg to reactor 1, heat with steam, when the temperature reaches 60°C-80°C, keep warm for 1-2 hours; wherein, magnesium oxide 38% (380Kg), silicon dioxide 20% , carbon dioxide 17%, boron oxide 3%, calcium oxide 3% (30Kg), manganese oxide 0.11% (1.1Kg), and others are water.

[0051] Step B, the boron mud heated in step A is carried out solid-liquid separation with the drier centrifuge 2, and the liquid is sent to further processing;

[0052] Step C, sending the boron mud solid separated in step B into the first corrosion-resistant reactor 3, and adding hydrochloric acid solution to the first corrosion-resistant reactor 3 at the same time, stirring to make it react; the boron mud solid and the hydrochloric acid solution with The converted pure mass ...

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

No PUM Login to View More

Abstract

The invention belongs to the technical field of three-waste (waste water, waste gas and waste residues) treatment and comprehensive utilization of inorganic chemical industry, particularly discloses a method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge. The method disclosed by the invention comprises the following steps of: firstly, heating the boric sludge with steam; secondly, separating and reacting the boric sludge with hydrochloric acid; and finally, distilling and cooling according to different solubilities of matters, and separating to obtain the product. The method disclosed by the invention can be used for sufficiently treating the waste residues of the boric sludge and reducing thepollution of the waste residues of the boric sludge to the environment; in addition, the valuable magnesium sulfate heptahydrate, manganese sulfate and calcium sulfate products are prepared, so that the method disclosed by theinvention not only has remark social and economic benefits, but also has a simple process and production equipment and is a practical treating and utilizing method.

Description

technical field [0001] The invention belongs to the technical field of inorganic chemical waste treatment and comprehensive utilization, in particular to a method for preparing magnesium sulfate heptahydrate and co-producing manganese sulfate and calcium sulfate with boron mud. technical background [0002] The waste slag produced in the production of boric acid, borax and other products is based on boronite (MgO·B 2 o 3 ·H 2 O) is raw material, by roasting, pulverizing, mixing with soda ash, adopting carbon water method to produce borax (Na 2 B 4 o 7 10H 2 O), then washing, crystallization process extracts the remaining solid waste after borax; This solid waste is off-white, yellow-white powdery solid, is alkaline, contains components such as boron oxide and magnesium oxide, is commonly called as " boron mud ". One ton of borax can produce 4 tons of boron mud, and one can produce 8,000 tons of borax, which can produce 32,000 tons of boron mud every year. The storage ...

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): C01F5/40C01F11/46C01G45/10
Inventor 王嘉兴
Owner 南通亚伦化工有限公司