阅读说明：本技术 一种用含钡渣泥生产建筑材料的处理方法 (Treatment method for producing building material by using barium-containing slag mud ) 是由 龙凤华 王瑞辉 于 2019-12-04 设计创作，主要内容包括：本申请公开的用含钡渣泥生产建筑材料的处理方法,与现有技术相比,具体包括以下步骤：将钡渣泥和水1:1比例搅拌混合加热并以硝酸进行化合；化合后调整PH为6.5～8；沉淀过滤,分离出硝酸钡溶液；经沉降后硝酸钡溶液加硫酸反应,生产沉淀硫酸钡和稀硝酸；沉淀硫酸钡经洗涤处理、压滤处理、烘干处理得到成品硫酸钡；固化钡离子；钡渣晾干处理,含水率4％～6％左右时,按水泥、沙子、钡渣10:20:70的比例充分混合,加固化剂处理制备形成水泥免烧砖。本发明涉及的用含钡渣泥生产建筑材料的处理方法,能够实现含钡渣泥的无害化处理,并对含钡渣泥进行资源化合理利用,生产出水泥免烧砖,提高资源利用率。(Compared with the prior art, the treatment method for producing the building material by using the barium-containing slag mud specifically comprises the following steps: stirring, mixing and heating the barium slag mud and water in a ratio of 1:1, and combining the barium slag mud and the water by using nitric acid; after combination, adjusting the pH value to 6.5-8; precipitating and filtering to separate out barium nitrate solution; after sedimentation, adding sulfuric acid into the barium nitrate solution for reaction to produce precipitated barium sulfate and dilute nitric acid; washing, filter pressing and drying the precipitated barium sulfate to obtain a finished product barium sulfate; solidifying barium ions; and (3) drying the barium slag, fully mixing the cement, the sand and the barium slag according to the proportion of 10:20:70 when the water content is about 4-6%, and treating by using a curing agent to prepare the cement baking-free brick. The treatment method for producing the building material by using the barium-containing slag mud can realize harmless treatment of the barium-containing slag mud, reasonably utilizes the barium-containing slag mud as resources, produces cement baking-free bricks, and improves the resource utilization rate.)

1. The treatment method for producing the building material by using the barium-containing slag mud is characterized by comprising the following steps of:

stirring, mixing and heating the barium slag mud and water in a ratio of 1:1, and combining the barium slag mud and the water by using nitric acid;

after combination, adjusting the pH value to 6.5-8;

precipitating and filtering to separate out barium nitrate solution;

after sedimentation, adding sulfuric acid into the barium nitrate solution for reaction to produce precipitated barium sulfate and dilute nitric acid;

washing, filter pressing and drying the precipitated barium sulfate to obtain a finished product barium sulfate;

solidifying barium ions;

and (3) drying the barium slag, fully mixing the cement, the sand and the barium slag according to the proportion of 10:20:70 when the water content is about 4-6%, and treating by using a curing agent to prepare the cement baking-free brick.

2. The treatment method for producing the building material by using the barium-containing slag sludge as claimed in claim 1, wherein the barium-containing slag sludge and water are stirred, mixed and heated in a ratio of 1:1, and combined by nitric acid, and the pH is adjusted to 6.5-8 after combination, specifically: after combination, the pH is adjusted to 7-7.5.

3. The treatment method for producing the building material by using the barium-containing slag sludge as claimed in claim 1, wherein the barium-containing slag sludge and water are stirred, mixed and heated in a ratio of 1:1, and combined by nitric acid, and the pH is adjusted to 6.5-8 after combination, specifically: adding Ba (OH)2 to react until the pH of the mixture is 6.5-8.

4. The process for the production of building materials from barium-containing slag sludge according to claim 2 or 3, wherein the solidified barium ions are in particular: adding Na2SO4 and FeSO4 into barium sludge after nitric acid treatment, and fully mixing and reacting to solidify barium ions.

5. The method for processing the barium-containing slag mud for producing the building material as claimed in claim 4, wherein the barium slag is air-dried, specifically, when the water content is 5%, the cement, the sand and the barium slag are fully mixed according to the proportion of 10:20:70, and are processed by a curing agent to prepare the cement baking-free brick.

6. The process for producing construction materials from barium-containing slag sludge as claimed in claim 1, further comprising the steps of, after solidifying the barium ions: and carrying out a waste residue leaching toxicity test.

Technical Field

The application relates to the technical field of barium slag treatment, in particular to a treatment method for producing building materials by using barium-containing slag mud.

Background

The industrial solid waste refers to solid waste generated in industrial production activities, is a kind of solid waste, is called industrial waste for short, is various waste residues, dust and other waste discharged into the environment in the industrial production process, barium slag is common industrial solid waste, and waste obtained by roasting barite and coal into clinker in the production of barium salt series contains water-soluble barium and acid-soluble barium, is strong alkaline and belongs to dangerous solid waste.

During the storage and stacking process of barium slag which is not subjected to harmless treatment, barium ions, particularly water-soluble barium ions are easy to permeate into underground water to cause pollution of underground water, poisoning can be caused after people drink the barium slag, and the safe treatment of the barium slag is an important problem in the industrial production of barium salt.

Therefore, how to provide a treatment method for producing building materials by using barium-containing slag mud, which can realize harmless treatment of the barium-containing slag mud and reasonably utilize the barium-containing slag mud as resources, has become a technical problem to be solved by the technical personnel in the field.

Disclosure of Invention

In order to solve the technical problems, the application provides a treatment method for producing building materials by using barium-containing slag mud, which can realize harmless treatment of the barium-containing slag mud and reasonably utilize the barium-containing slag mud as resources.

The technical scheme provided by the application is as follows:

the application provides a treatment method for producing building materials by using barium-containing slag mud, which specifically comprises the following steps: stirring, mixing and heating the barium slag mud and water in a ratio of 1:1, and combining the barium slag mud and the water by using nitric acid; after combination, adjusting the pH value to 6.5-8; precipitating and filtering to separate out barium nitrate solution; after sedimentation, adding sulfuric acid into the barium nitrate solution for reaction to produce precipitated barium sulfate and dilute nitric acid; washing, filter pressing and drying the precipitated barium sulfate to obtain a finished product barium sulfate; solidifying barium ions; and (3) drying the barium slag, fully mixing the cement, the sand and the barium slag according to the proportion of 10:20:70 when the water content is about 4-6%, and treating by using a curing agent to prepare the cement baking-free brick.

Further, in a preferred mode of the invention, the barium slag mud and water are stirred, mixed and heated in a ratio of 1:1, and combined by nitric acid, and after combination, the pH is adjusted to 6.5-8, specifically: after combination, the pH is adjusted to 7-7.5.

Further, in a preferred mode of the invention, the barium slag mud and water are stirred, mixed and heated in a ratio of 1:1, and combined by nitric acid, and after combination, the pH is adjusted to 6.5-8, specifically: adding Ba (OH)2 to react until the pH of the mixture is 6.5-8.

Further, in a preferred embodiment of the present invention, the solidified barium ions are specifically: adding Na2SO4 and FeSO4 into barium sludge after nitric acid treatment, and fully mixing and reacting to solidify barium ions.

Further, in a preferred mode of the invention, the barium slag is aired, specifically, when the water content is 5%, the cement, the sand and the barium slag are fully mixed according to the proportion of 10:20:70, and the mixture is treated by a curing agent to prepare the cement baking-free brick.

Further, in a preferred mode of the present invention, the method further includes, after the step of solidifying the barium ions: and carrying out a waste residue leaching toxicity test.

Compared with the prior art, the treatment method for producing the building material by using the barium-containing slag mud specifically comprises the following steps: stirring, mixing and heating the barium slag mud and water in a ratio of 1:1, and combining the barium slag mud and the water by using nitric acid; after combination, adjusting the pH value to 6.5-8; precipitating and filtering to separate out barium nitrate solution; after sedimentation, adding sulfuric acid into the barium nitrate solution for reaction to produce precipitated barium sulfate and dilute nitric acid; washing, filter pressing and drying the precipitated barium sulfate to obtain a finished product barium sulfate; solidifying barium ions; and (3) drying the barium slag, fully mixing the cement, the sand and the barium slag according to the proportion of 10:20:70 when the water content is about 4-6%, and treating by using a curing agent to prepare the cement baking-free brick. The treatment method for producing the building material by using the barium-containing slag mud can realize harmless treatment of the barium-containing slag mud, reasonably utilizes the barium-containing slag mud as resources, produces cement baking-free bricks, and improves the resource utilization rate.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic flow chart of a treatment method for producing building materials by using barium-containing slag mud according to an embodiment of the invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "first," "second," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.

It should be understood that the proportion referred to in the specification is not specifically illustrated, but rather, the structure, proportion, size, etc. are shown in the drawings for the purpose of matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not intended to limit the conditions under which the disclosure may be implemented, and therefore, the structure, the proportion, or the size of the structure may be modified without substantially affecting the efficacy and the achievable purpose of the disclosure.

As shown in fig. 1, the processing method for producing a building material by using barium-containing slag sludge provided in the embodiment of the present application specifically includes the following steps: stirring, mixing and heating the barium slag mud and water in a ratio of 1:1, and combining the barium slag mud and the water by using nitric acid; after combination, adjusting the pH value to 6.5-8; precipitating and filtering to separate out barium nitrate solution; after sedimentation, adding sulfuric acid into the barium nitrate solution for reaction to produce precipitated barium sulfate and dilute nitric acid; washing, filter pressing and drying the precipitated barium sulfate to obtain a finished product barium sulfate; solidifying barium ions; and (3) drying the barium slag, fully mixing the cement, the sand and the barium slag according to the proportion of 10:20:70 when the water content is about 4-6%, and treating by using a curing agent to prepare the cement baking-free brick.

The embodiment of the invention provides a treatment method for producing building materials by using barium-containing slag mud, which specifically comprises the following steps: stirring, mixing and heating the barium slag mud and water in a ratio of 1:1, and combining the barium slag mud and the water by using nitric acid; after combination, adjusting the pH value to 6.5-8; precipitating and filtering to separate out barium nitrate solution; after sedimentation, adding sulfuric acid into the barium nitrate solution for reaction to produce precipitated barium sulfate and dilute nitric acid; washing, filter pressing and drying the precipitated barium sulfate to obtain a finished product barium sulfate; solidifying barium ions; and (3) drying the barium slag, fully mixing the cement, the sand and the barium slag according to the proportion of 10:20:70 when the water content is about 4-6%, and treating by using a curing agent to prepare the cement baking-free brick. The treatment method for producing the building material by using the barium-containing slag mud can realize harmless treatment of the barium-containing slag mud, reasonably utilizes the barium-containing slag mud as resources, produces cement baking-free bricks, and improves the resource utilization rate.

Specifically, in the embodiment of the invention, the barium slag mud and water are stirred, mixed and heated in a ratio of 1:1, and combined by nitric acid, and after combination, the pH is adjusted to 6.5-8, specifically: after combination, the pH is adjusted to 7-7.5.

Specifically, in the embodiment of the invention, the barium slag mud and water are stirred, mixed and heated in a ratio of 1:1, and combined by nitric acid, and after combination, the pH is adjusted to 6.5-8, specifically: adding Ba (OH)2 to react until the pH of the mixture is 6.5-8.

Specifically, in the embodiment of the present invention, the solidified barium ions are specifically: adding Na2SO4 and FeSO4 into barium sludge after nitric acid treatment, and fully mixing and reacting to solidify barium ions.

Specifically, in the embodiment of the invention, the barium slag is dried, specifically, when the water content is 5%, the cement, the sand and the barium slag are fully mixed according to the proportion of 10:20:70, and the cement baking-free brick is prepared by treating a reinforcing agent.

Specifically, in the embodiment of the present invention, after the barium ions are solidified, the method further includes the steps of: and carrying out a waste residue leaching toxicity test.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.