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

Method for preparing carbonate from pyrite cinder by using chemical method

A technology of sulfuric acid slag and carbonate is applied in the carbonate field to achieve the effects of guaranteed quality, avoiding secondary pollution and improving economic benefits

Inactive Publication Date: 2011-06-15
何侠
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to process and comprehensively utilize sulfuric acid slag to prepare carbonate, and provide a method for chemically preparing sulfuric acid slag as carbonate. The accumulation and pollution of slag, and produce a variety of chemical products such as chlorides, creating considerable economic benefits

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

[0015] Embodiment 1, a kind of chemically prepared sulfuric acid slag described in the present embodiment is the method for carbonate, comprises the steps:

[0016] Take 500 kg of sulfuric acid slag with a calcium oxide content of 1.63% and a magnesium oxide content of 0.46% to prepare carbonate, and put the sulfuric acid slag (calculated as aluminum chloride) and hydrochloric acid into the first corrosion-resistant In the reactor, turn on the agitator at the same time and stir slowly to make the substances react chemically. After 20 minutes, the reaction will generate aluminum chloride, ferric chloride, calcium chloride, magnesium chloride and other chlorides, and filter to obtain silicide and elemental sulfur black. The filter cake is sent for further processing, and at the same time, a clarified chloride liquid is obtained for further purification;

[0017] Send the chloride liquid (calculated as calcium chloride) and ammonium carbonate obtained above into the second corros...

Embodiment 2

[0020] Embodiment 2, a kind of chemically prepared sulfuric acid slag described in the present embodiment is the method for carbonate, comprises the steps:

[0021] Take 500 kg of sulfuric acid slag with a calcium oxide content of 1.63% and a magnesium oxide content of 0.46% to prepare carbonate, and put sulfuric acid slag (calculated as aluminum chloride) and hydrochloric acid into the first corrosion-resistant slag with a pure mass ratio of 1:2.35 In the reactor, turn on the agitator at the same time and stir slowly to make the substances react chemically. After 20 minutes, the reaction will generate aluminum chloride, ferric chloride, calcium chloride, magnesium chloride and other chlorides, and filter to obtain silicide and elemental sulfur black. The filter cake is sent for further processing, and at the same time, a clarified chloride liquid is obtained for further purification;

[0022] Send the chloride liquid (calculated as calcium chloride) and ammonium carbonate obt...

Embodiment 3

[0025] Embodiment 3, a kind of chemically prepared sulfuric acid slag described in the present embodiment is the method for carbonate, comprises the steps:

[0026] Take 500 kg of sulfuric acid slag with calcium oxide content of 1.63% and magnesia content of 0.46% to prepare carbonate, and put sulfuric acid slag (calculated as aluminum chloride) and hydrochloric acid into the first corrosion-resistant In the reactor, turn on the agitator at the same time and stir slowly to make the substances react chemically. After 20 minutes, the reaction will generate aluminum chloride, ferric chloride, calcium chloride, magnesium chloride and other chlorides, and filter to obtain silicide and elemental sulfur black. The filter cake is sent for further processing, and at the same time, a clarified chloride liquid is obtained for further purification;

[0027] Send the chloride liquid (calculated as calcium chloride) and ammonium carbonate obtained above into the second corrosion-resistant r...

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 discloses a method for preparing carbonate from pyrite cinder by using a chemical method, comprising the following steps of: feeding the pyrite cinder and hydrochloric acid in the pure mass ratio of 1:1.95-2.35 into a first corrosion-resisting reactor; opening a stirrer for stirring for 20 minutes and then making the mixture react to generate chlorides such as aluminum chloride, ferric chloride, calcium chloride, magnesium chloride and the like and filtering to obtain silicides and an elemental sulfur black filter cake and obtain a clarified chloride liquid at the same time; feeding the obtained chloride liquid and ammonium carbonate in the pure mass ratio of 1:0.88-1.28 into in a second corrosion-resisting reactor; opening the stirrer for stirring and making the mixture react to generate carbonates such as calcium carbonate, magnesium carbonate, ammonium chloride and the like and filtering to obtain a clarified ammonium chloride solution and obtain calcium carbonate and magnesium carbonate white filter cakes at the same time; and washing, drying, winnowing, grading, crushing and packaging the calcium carbonate and the magnesium carbonate white filter cakes to respectively obtain calcium carbonate and magnesium carbonate powder products. By using the method, the carbonate is prepared from the pyrite cinder as a raw material.

Description

technical field [0001] The invention relates to the technical field of treating and utilizing waste slag in the sulfuric acid industry of inorganic chemical industry, in particular to a method for preparing sulfuric acid slag into carbonate by chemical method. Background technique [0002] The sulfuric acid industry uses pyrite as raw material to produce sulfuric acid by contact method, which is mainly composed of five processes: raw material, roasting, purification, transformation and absorption. Generally, the purification process is generally used to divide sulfuric acid production into two categories: dry method and wet method. Wet cleaning can be divided into pickling, hot concentrated pickling and water washing. At present, in my country's pyrite acid production, a few factories use pickling process, and most of them still use water washing process. [0003] Pyrite is mainly composed of sulfur and iron, accompanied by a small amount of non-ferrous metals and rare met...

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
IPC IPC(8): C01F11/18C01F5/24
Inventor 何侠
Owner 何侠