阅读说明：本技术 黄金尾渣溢流泥免烧砖用激发剂及其制备方法 (Excitant for gold tailing overflowing mud baking-free brick and preparation method thereof ) 是由 王春青 张云燕 侯伟 伦雪 徐顺涛 刘康 伦志展 张金亿 于 2021-01-13 设计创作，主要内容包括：本发明属于免烧砖助剂技术领域,具体的涉及一种黄金尾渣溢流泥免烧砖用激发剂及其制备方法。所述的激发剂由以下重量份数的原料制成：减水剂0.02～0.2份、三乙醇胺0.5～2份、丙三醇0.1～1.5份、硫酸钠1～7份、硫酸钾1～5份、氯化镁1～3份、氢氧化钠0.2～0.8份、硅酸钠1～5份、松香酸钠0.1～0.5份和去离子水80～100份。本发明所述的黄金尾渣溢流泥免烧砖用激发剂,将其加入到黄金尾渣溢流泥免烧砖体系中后,能够激发原料中的SiO-2和Al-2O-3成分,通过减少水泥的用量来降低免烧砖的生产成本,并提高免烧砖的强度及抗冻融性。(The invention belongs to the technical field of baking-free brick additives, and particularly relates to an excitant for gold tailing overflow mud baking-free bricks and a preparation method thereof. The excitant is prepared from the following raw materials in parts by weight: 0.02-0.2 part of water reducing agent, 0.5-2 parts of triethanolamine, 0.1-1.5 parts of glycerol, 1-7 parts of sodium sulfate, 1-5 parts of potassium sulfate, 1-3 parts of magnesium chloride, 0.2-0.8 part of sodium hydroxide, 1-5 parts of sodium silicate, 0.1-0.5 part of sodium abietate and 80-100 parts of deionized water. The excitant for the gold tailing overflow mud baking-free brick can excite SiO in raw materials after being added into a gold tailing overflow mud baking-free brick system 2 And Al 2 O 3 The components are used for reducing the production cost of the baking-free brick by reducing the consumption of cement and improving the strength and freeze-thaw resistance of the baking-free brick.)

1. an excitant for gold tailing overflow mud baking-free bricks is characterized in that: the feed is prepared from the following raw materials in parts by weight: 0.02-0.2 part of water reducing agent, 0.5-2 parts of triethanolamine, 0.1-1.5 parts of glycerol, 1-7 parts of sodium sulfate, 1-5 parts of potassium sulfate, 1-3 parts of magnesium chloride, 0.2-0.8 part of sodium hydroxide, 1-5 parts of sodium silicate, 0.1-0.5 part of sodium abietate and 80-100 parts of deionized water.

2. The excitant for the gold tailings overflow mud baking-free brick as claimed in claim 1, wherein: the feed is prepared from the following raw materials in parts by weight: 0.1-0.2 part of water reducing agent, 1.2-1.5 parts of triethanolamine, 0.5-1.5 parts of glycerol, 5-5.5 parts of sodium sulfate, 3-3.5 parts of potassium sulfate, 1-2 parts of magnesium chloride, 0.2-0.3 part of sodium hydroxide, 3-5 parts of sodium silicate, 0.2-0.4 part of sodium abietate and 80-100 parts of deionized water.

3. The excitant for the gold tailings overflow mud baking-free brick as claimed in claim 1, wherein: the feed is prepared from the following raw materials in parts by weight: 0.15 part of water reducing agent, 1.3 parts of triethanolamine, 1 part of glycerol, 5 parts of sodium sulfate, 3 parts of potassium sulfate, 1.5 parts of magnesium chloride, 0.3 part of sodium hydroxide, 4 parts of sodium silicate, 0.3 part of sodium abietate and 90 parts of deionized water.

4. The excitant for the baking-free bricks of the gold tailings overflow mud as claimed in any one of claims 1 to 3, which is characterized in that: the water reducing agent is one of polycarboxylate high-efficiency water reducing agents or lignosulfonate water reducing agents.

5. The excitant for the gold tailings overflow mud baking-free brick as claimed in claim 4, wherein: the polycarboxylate high-efficiency water reducing agent is a DH-4005 type polycarboxylate high-efficiency water reducing agent; the lignosulfonate water reducing agent is sodium lignosulfonate water reducing agent.

6. The preparation method of the excitant for the gold tailings overflow mud baking-free brick as claimed in claim 1, is characterized in that: the method comprises the following steps:

(1) adding sodium silicate into deionized water at the temperature of 80-90 ℃, and stirring and dissolving to obtain a sodium silicate aqueous solution;

(2) and (2) adding a water reducing agent, triethanolamine, glycerol, sodium sulfate, potassium sulfate, magnesium chloride, sodium hydroxide and sodium abietate into the sodium silicate aqueous solution prepared in the step (1), and stirring and dissolving to obtain the excitant for the baking-free brick of the gold tailings overflow mud.

7. The application of the excitant for the baking-free bricks of the gold tailings overflow mud as claimed in claim 1, is characterized in that: adding an excitant into a gold tailing overflow mud baking-free brick system; the usage amount of the excitant is 0.01-0.05% of the mass of the raw material of the baking-free brick made of gold tailings overflowing mud.

Technical Field

The invention belongs to the technical field of baking-free brick additives, and particularly relates to an excitant for gold tailing overflow mud baking-free bricks and a preparation method thereof.

Background

The gold tailings overflow mud is a byproduct discharged by precipitation, pressure filtration and discharge of fine mud generated in the process of producing potassium-sodalite and cleaning construction sand by comprehensively utilizing gold tailings, and the particle fineness is below minus 325 meshes. At present, the annual gold production in China is about 400 tons, and the annual removal of gold tailings is estimated to be 20000 million tons (calculated according to 2 g gold contained in 1 ton ore). The annual gold production in the tobacco field is about 55 tons, the tailings production is about 2250 ten thousand tons, the underground filling is calculated according to 60%, and 650 ten thousand tons are processed. At present, about 0.3 ton of overflow mud is discharged after 1 ton of gold tailings are used for producing potash albite and building sand, and 195 ten thousand tons of overflow mud is produced after 650 ten thousand tons of gold tailings are discharged one year. The appearance of the overflow mud is close to the soil color, and the chemical components of the overflow mud are as follows:

name (R)	SiO2	Al2O3	K2O	Na2O	CaO	MgO	Fe2O3	TiO2
									Content/%	68.11	17.71	4.70	2.64	1.19	0.25	1.33	0.16

Because the iron sesquioxide has fine fineness and is easy to agglomerate after dehydration, and the color of the iron sesquioxide is dark brown after the iron sesquioxide is burnt to 1200 ℃, a good outlet is not provided for the prior large-scale utilization. A large amount of overflow mud can not be fully and effectively utilized, and can only be stacked by a large-area storage yard, thereby occupying a large amount of land and causing serious pollution to the environment. The generation of a large amount of overflow mud restricts the development of gold enterprises and causes direct and indirect influences on various aspects of production and life of local residents, so that how to recycle, reduce and harmlessly utilize the gold tailings overflow mud becomes a great problem in the front of people at present.

At present, in order to protect land resources and ecological environment, clay red bricks which are originally used as building wall materials are gradually forbidden to be used in China, and are replaced by various baking-free bricks, baking-free building blocks and other novel building materials. If the overflow mud can be used for preparing the baking-free brick, on one hand, the overflow mud can be reused, and on the other hand, the preparation cost of the baking-free brick can be reduced. However, in the process of preparing the overflow mud baking-free brick, due to the characteristics of the overflow mud, the pressed baking-free brick has the defect of low strength, in order to improve the strength, a mode of increasing the cement dosage is mostly adopted, and the increase of the cement dosage greatly improves the production cost of the overflow mud baking-free brick.

Therefore, there is a need to develop an activator for baking-free bricks made of gold tailings overflow mud, so as to improve the strength and frost resistance of the bricks.

Disclosure of Invention

The purpose of the invention is: provides an excitant for gold tailing overflowing mud baking-free bricks. The excitant can reduce the consumption of cement, improve the strength of the baking-free brick and reduce the production cost of the baking-free brick; the invention also provides a preparation method thereof.

The excitant for the gold tailing overflow mud baking-free brick is prepared from the following raw materials in parts by weight: 0.02-0.2 part of water reducing agent, 0.5-2 parts of triethanolamine, 0.1-1.5 parts of glycerol, 1-7 parts of sodium sulfate, 1-5 parts of potassium sulfate, 1-3 parts of magnesium chloride, 0.2-0.8 part of sodium hydroxide, 1-5 parts of sodium silicate, 0.1-0.5 part of sodium abietate and 80-100 parts of deionized water.

Preferably, the excitant for the gold tailings overflow mud baking-free brick is prepared from the following raw materials in parts by weight: 0.1-0.2 part of water reducing agent, 1.2-1.5 parts of triethanolamine, 0.5-1.5 parts of glycerol, 5-5.5 parts of sodium sulfate, 3-3.5 parts of potassium sulfate, 1-2 parts of magnesium chloride, 0.2-0.3 part of sodium hydroxide, 3-5 parts of sodium silicate, 0.2-0.4 part of sodium abietate and 80-100 parts of deionized water.

More preferably, the excitant for the gold tailings overflow mud baking-free brick is prepared from the following raw materials in parts by weight: 0.15 part of water reducing agent, 1.3 parts of triethanolamine, 1 part of glycerol, 5 parts of sodium sulfate, 3 parts of potassium sulfate, 1.5 parts of magnesium chloride, 0.3 part of sodium hydroxide, 4 parts of sodium silicate, 0.3 part of sodium abietate and 90 parts of deionized water.

Wherein:

the water reducing agent is one of polycarboxylate high-efficiency water reducing agents or lignosulfonate water reducing agents; the polycarboxylate high-efficiency water reducing agent is DH-4005 type polycarboxylate high-efficiency water reducing agent; the lignosulfonate water reducing agent is sodium lignosulfonate water reducing agent.

The excitant for the baking-free brick is added into a gold tailing overflow mud baking-free brick system, and SiO in the raw materials can be excited₂And Al₂O₃Ingredients, the production cost of the baking-free brick is reduced by reducing the consumption of cementAnd the strength and the freeze-thaw resistance of the brick are improved, and the method has the advantages of convenience in production, high strength, better durability, environmental friendliness and energy conservation in the actual production process of the gold tailing overflowing mud baking-free brick.

The preparation method of the excitant for the gold tailing overflow mud baking-free brick comprises the following steps:

(1) adding sodium silicate into deionized water at the temperature of 80-90 ℃, and stirring and dissolving to obtain a sodium silicate aqueous solution;

(2) and (2) adding a water reducing agent, triethanolamine, glycerol, sodium sulfate, potassium sulfate, magnesium chloride, sodium hydroxide and sodium abietate into the sodium silicate aqueous solution prepared in the step (1), and stirring and dissolving to obtain the excitant for the baking-free brick of the gold tailings overflow mud.

The application of the excitant for the gold tailing overflow mud baking-free brick is that the excitant is added into a gold tailing overflow mud baking-free brick system; the usage amount of the excitant is 0.01-0.05% of the mass of the raw material of the baking-free brick made of gold tailings overflowing mud.

Compared with the prior art, the invention has the following beneficial effects:

(1) the excitant for the gold tailing overflow mud baking-free brick can excite SiO in raw materials after being added into a gold tailing overflow mud baking-free brick system₂And Al₂O₃The production cost of the baking-free brick is reduced by reducing the consumption of cement, and the strength and the frost resistance of the baking-free brick are improved.

(2) The preparation method of the excitant for the gold tailing overflow mud baking-free brick is scientific, reasonable, simple and feasible, and is suitable for industrial production.

(3) The application of the excitant for the gold tailing overflow mud baking-free brick directly adds the excitant into a raw material system of the gold tailing overflow mud baking-free brick according to a certain proportion, has the advantages of convenient use, high strength of a finished brick, strong frost resistance, better durability, environmental protection and energy saving, realizes the comprehensive utilization of the gold tailing overflow mud, and reduces the pollution of the gold tailing overflow mud to the environment.

Detailed Description

The present invention is further described below with reference to examples.

Example 1

The excitant for the gold tailings overflow mud baking-free brick in the embodiment 1 is prepared from the following raw materials by weight: 0.1Kg of water reducing agent, 1.2Kg of triethanolamine, 1Kg of glycerol, 5Kg of sodium sulfate, 3.5Kg of potassium sulfate, 1Kg of magnesium chloride, 0.25Kg of sodium hydroxide, 4Kg of sodium silicate, 0.2Kg of sodium abietate and 90Kg of deionized water.

Wherein the water reducing agent is a DH-4005 type polycarboxylate high-efficiency water reducing agent.

The preparation method of the excitant for the gold tailings overflow mud baking-free brick in the embodiment 1 comprises the following steps:

(1) weighing 4kg of sodium silicate, adding the sodium silicate into 90kg of deionized water at 85 ℃, and fully stirring and dissolving to prepare a sodium silicate solution;

(2) weighing 0.1Kg of DH-4005 type polycarboxylate superplasticizer, 1.2Kg of triethanolamine, 1Kg of glycerol, 5Kg of sodium sulfate, 3.5Kg of potassium sulfate, 1Kg of magnesium chloride, 0.25Kg of sodium hydroxide and 0.2Kg of sodium abietate, and adding the weighed materials into the sodium silicate solution to be fully stirred and dissolved to prepare the excitant for the gold tailings overflow mud baking-free brick.

In the application of the excitant for the baking-free brick made of the gold tailings overflow mud in the embodiment 1, 50kg of gold tailings overflow mud and 37kg of waste incineration slag are weighed; weighing 13kg of 425# cement and 0.02kg of excitant, mixing, carrying out rolling type stirring for 20min, and adding water to adjust the humidity of the mixture in the stirring process to obtain a raw material mixture; slowly pouring the stirred raw material mixture into a die, slightly shaking to enable the raw material mixture to be leveled in a punching brick making machine, and pressing for 200 seconds at the pressure of 8MPa for forming; and naturally curing the green bricks for 15 days, and drying to obtain the finished gold tailings overflow mud baking-free bricks.

Example 2

The excitant for the gold tailings overflow mud baking-free brick in the embodiment 2 is prepared from the following raw materials by weight: 0.1Kg of water reducing agent, 1.2Kg of triethanolamine, 1Kg of glycerol, 5Kg of sodium sulfate, 3.5Kg of potassium sulfate, 1Kg of magnesium chloride, 0.25Kg of sodium hydroxide, 4Kg of sodium silicate, 0.2Kg of sodium abietate and 90Kg of deionized water.

Wherein the water reducing agent is a DH-4005 type polycarboxylate high-efficiency water reducing agent.

The preparation method of the excitant for the gold tailings overflow mud baking-free brick in the embodiment 2 comprises the following steps:

(1) weighing 4kg of sodium silicate, adding the sodium silicate into 90kg of deionized water at 85 ℃, and fully stirring and dissolving to prepare a sodium silicate solution;

(2) weighing 0.1Kg of DH-4005 type polycarboxylate superplasticizer, 1.2Kg of triethanolamine, 1Kg of glycerol, 5Kg of sodium sulfate, 3.5Kg of potassium sulfate, 1Kg of magnesium chloride, 0.25Kg of sodium hydroxide and 0.2Kg of sodium abietate, and adding the weighed materials into the sodium silicate solution to be fully stirred and dissolved to prepare the excitant for the gold tailings overflow mud baking-free brick.

In the application of the excitant for the baking-free brick made of the gold tailings overflow mud in the embodiment 2, 50kg of gold tailings overflow mud and 37kg of waste incineration slag are weighed; weighing 13kg of 425# cement and 0.04kg of excitant, mixing, carrying out rolling type stirring for 20min, and adding water to adjust the humidity of the mixture in the stirring process to obtain a raw material mixture; slowly pouring the stirred raw material mixture into a die, slightly shaking to enable the raw material mixture to be leveled in a punching brick making machine, and pressing for 200 seconds at the pressure of 8MPa for forming; and naturally curing the green bricks for 15 days, and drying to obtain the finished gold tailings overflow mud baking-free bricks.

Example 3

The excitant for the gold tailing overflowing mud baking-free brick in the embodiment 3 is prepared from the following raw materials in parts by weight: 0.15Kg of water reducing agent, 1.3Kg of triethanolamine, 1Kg of glycerol, 5Kg of sodium sulfate, 3.0Kg of potassium sulfate, 1.5Kg of magnesium chloride, 0.3Kg of sodium hydroxide, 4Kg of sodium silicate, 0.3Kg of sodium abietate and 90Kg of deionized water.

Wherein the water reducing agent is sodium lignosulfonate water reducing agent.

The preparation method of the excitant for the gold tailings overflow mud baking-free brick in the embodiment 3 comprises the following steps:

(1) weighing 4kg of sodium silicate, adding the sodium silicate into 90kg of deionized water at 85 ℃, and fully stirring and dissolving to prepare a sodium silicate solution;

(2) weighing 0.15Kg of sodium lignosulfonate water reducing agent, 1.3Kg of triethanolamine, 1Kg of glycerol, 5Kg of sodium sulfate, 3.0Kg of potassium sulfate, 1.5Kg of magnesium chloride, 0.3Kg of sodium hydroxide and 0.3Kg of sodium abietate, adding the sodium lignosulfonate water reducing agent, the sodium hydroxide and the sodium abietate into the sodium silicate solution, and fully stirring and dissolving to obtain the excitant for the gold tailing overflow mud baking-free brick.

In the application of the excitant for the gold tailing overflow sludge baking-free brick in the embodiment 3, 50kg of gold tailing overflow sludge and 37kg of waste incineration residue are weighed; weighing 13kg of 425# cement and 0.02kg of excitant, mixing, carrying out rolling type stirring for 20min, and adding water to adjust the humidity of the mixture in the stirring process to obtain a raw material mixture; slowly pouring the stirred raw material mixture into a die, slightly shaking to enable the raw material mixture to be leveled in a punching brick making machine, and pressing for 200 seconds at the pressure of 8MPa for forming; and naturally curing the green bricks for 15 days, and drying to obtain the finished gold tailings overflow mud baking-free bricks.

Example 4

The excitant for the gold tailings overflow mud baking-free brick in the embodiment 4 is prepared from the following raw materials by weight: 0.15Kg of water reducing agent, 1.3Kg of triethanolamine, 1Kg of glycerol, 5Kg of sodium sulfate, 3.0Kg of potassium sulfate, 1.5Kg of magnesium chloride, 0.3Kg of sodium hydroxide, 4Kg of sodium silicate, 0.3Kg of sodium abietate and 90Kg of deionized water.

Wherein the water reducing agent is sodium lignosulfonate water reducing agent.

The preparation method of the excitant for the gold tailings overflow mud baking-free brick in the embodiment 4 comprises the following steps:

(1) weighing 4kg of sodium silicate, adding the sodium silicate into 90kg of deionized water at 85 ℃, and fully stirring and dissolving to prepare a sodium silicate solution;

(2) weighing 0.15Kg of sodium lignosulfonate water reducing agent, 1.3Kg of triethanolamine, 1Kg of glycerol, 5Kg of sodium sulfate, 3.0Kg of potassium sulfate, 1.5Kg of magnesium chloride, 0.3Kg of sodium hydroxide and 0.3Kg of sodium abietate, adding the sodium lignosulfonate water reducing agent, the sodium hydroxide and the sodium abietate into the sodium silicate solution, and fully stirring and dissolving to obtain the excitant for the gold tailing overflow mud baking-free brick.

Wherein the water reducing agent is sodium lignosulfonate water reducing agent.

In the application of the excitant for the baking-free brick made of gold tailings overflow mud in the embodiment 4, 50kg of gold tailings overflow mud and 37kg of waste incineration slag are weighed; weighing 13kg of 425# cement and 0.04kg of excitant, mixing, carrying out rolling type stirring for 20min, and adding water to adjust the humidity of the mixture in the stirring process to obtain a raw material mixture; slowly pouring the stirred raw material mixture into a die, slightly shaking to enable the raw material mixture to be leveled in a punching brick making machine, and pressing for 200 seconds at the pressure of 8MPa for forming; and naturally curing the green bricks for 15 days, and drying to obtain the finished gold tailings overflow mud baking-free bricks.

Example 5

The excitant for the gold tailings overflow mud baking-free brick in the embodiment 5 is prepared from the following raw materials by weight: 0.2Kg of water reducing agent, 1.5Kg of triethanolamine, 1.5Kg of glycerol, 7Kg of sodium sulfate, 1Kg of potassium sulfate, 3Kg of magnesium chloride, 0.8Kg of sodium hydroxide, 5Kg of sodium silicate, 0.5Kg of sodium abietate and 100Kg of deionized water.

Wherein the water reducing agent is sodium lignosulfonate water reducing agent.

The preparation method of the excitant for the gold tailings overflow mud baking-free brick in the embodiment 5 comprises the following steps:

(1) weighing 5kg of sodium silicate, adding the sodium silicate into 100kg of deionized water at 90 ℃, and fully stirring and dissolving to prepare a sodium silicate solution;

(2) weighing 0.2Kg of sodium lignosulfonate water reducing agent, 1.5Kg of triethanolamine, 1.5Kg of glycerol, 7Kg of sodium sulfate, 1Kg of potassium sulfate, 3Kg of magnesium chloride, 0.8Kg of sodium hydroxide and 0.5Kg of sodium abietate, adding the sodium silicate solution, and fully stirring and dissolving to obtain the excitant for the gold tailings overflow mud baking-free brick.

In the application of the excitant for the baking-free brick made of gold tailings overflow mud in the embodiment 5, 50kg of gold tailings overflow mud and 37kg of waste incineration slag are weighed; weighing 13kg of 425# cement and 0.05kg of excitant, mixing, carrying out rolling type stirring for 20min, and adding water to adjust the humidity of the mixture in the stirring process to obtain a raw material mixture; slowly pouring the stirred raw material mixture into a die, slightly shaking to enable the raw material mixture to be leveled in a punching brick making machine, and pressing for 200 seconds at the pressure of 8MPa for forming; and naturally curing the green bricks for 15 days, and drying to obtain the finished gold tailings overflow mud baking-free bricks.

Comparative example 1

The excitant for the gold tailing overflow mud baking-free brick in the comparative example 1 is prepared from the following raw materials in parts by weight: 0.2kg of water reducing agent, 1.5kg of triethanolamine, 1.5kg of glycerol, 7kg of sodium sulfate, 1kg of potassium sulfate, 3kg of magnesium chloride, 0.8kg of sodium hydroxide, 5kg of sodium silicate and 100kg of deionized water.

Wherein the water reducing agent is sodium lignosulfonate water reducing agent.

The preparation method of the excitant for the gold tailing overflow mud baking-free brick in the comparative example 1 comprises the following steps:

(1) weighing 5kg of sodium silicate, adding the sodium silicate into 100kg of deionized water at 90 ℃, and fully stirring and dissolving to prepare a sodium silicate solution;

(2) weighing 0.2kg of sodium lignosulfonate water reducing agent, 1.5kg of triethanolamine, 1.5kg of glycerol, 7kg of sodium sulfate, 1kg of potassium sulfate, 3kg of magnesium chloride and 0.8kg of sodium hydroxide, and adding the sodium silicate solution into the sodium silicate solution to be fully stirred and dissolved to obtain the excitant for the gold tailings overflow mud baking-free brick.

The application of the excitant for the gold tailing overflow sludge baking-free brick in the comparative example 1 is that 50kg of gold tailing overflow sludge and 37kg of waste incineration slag are weighed; weighing 13kg of 425# cement and 0.05kg of excitant, mixing, carrying out rolling type stirring for 20min, and adding water to adjust the humidity of the mixture in the stirring process to obtain a raw material mixture; slowly pouring the stirred raw material mixture into a die, slightly shaking to enable the raw material mixture to be leveled in a punching brick making machine, and pressing for 200 seconds at the pressure of 8MPa for forming; and naturally curing the green bricks for 15 days, and drying to obtain the finished gold tailings overflow mud baking-free bricks.

Comparative example 2

The baking-free brick of gold tailings overflow mud of the comparative example 2: weighing 50kg of gold tailing overflow mud, 37kg of waste incineration slag and 13kg of No. 425 cement, mixing, performing rolling type stirring for 20min, and adding water to adjust the humidity of the mixture during stirring to obtain a raw material mixture; slowly pouring the stirred raw material mixture into a die, slightly shaking to enable the raw material mixture to be leveled in a punching brick making machine, and pressing for 200 seconds at the pressure of 8MPa for forming; and naturally curing the green bricks for 15 days, and drying to obtain the finished product.

The compression strength and frost resistance of the finished products prepared in the examples 1-5 and the comparative examples 1-2 are tested according to the national baking-free brick test standard (GB/T2542 baking-free brick test standard); specific data are shown in table 1.

TABLE 1 compression strength and freeze-thaw resistance of the finished products obtained in examples 1-5 and comparative examples 1-2

Serial number	Compressive strength (MPa)	Freeze resistance test (-30 ℃ C.)
			Example 1	26.1	Good integrity of appearance after 30 cycles
Example 2	26.8	Good integrity of appearance after 30 cycles
			Example 3	27.3	Good integrity of appearance after 30 cycles
Example 4	27.7	Good integrity of appearance after 30 cycles
			Example 5	27.2	Good integrity of appearance after 30 cycles
Comparative example 1	21.7	The mass loss is 5 percent after 7 times of circulation
			Comparative example 2	15.2	The mass loss exceeds 5 percent after 4 times of circulation

As can be seen from Table 1, the addition of the excitant prepared by the invention into a preparation system of the gold tailings overflow mud brick can greatly improve the compressive strength of a finished brick, but when the usage amount of the excitant is more than 0.04%, the compressive strength effect is not obvious, and the influence of freeze thawing resistance is not great; when sodium abietate is removed from the formula of the excitant, the strength is reduced to some extent, and the freezing resistance is obviously reduced. The excitant has the advantages of convenient use, high strength of finished bricks, environmental protection and energy saving, realizes the comprehensive utilization of the gold tailings overflowing mud, and reduces the pollution of the gold tailings overflowing mud to the environment.

The cost before and after the use of the exciting agent is compared with the table:

when the strength effect of adding the exciting agent is achieved without adding the exciting agent, the adding amount of the cement is obviously increased, and the manufacturing cost per square baking-free brick is increased. The preparation cost of the exciting agent is 17.45 yuan/m²The preparation cost without adding the excitant is 22.22 yuan/m²The difference of the cost per square is 4.77 yuan/m²。

The cost of the gold tailings overflow mud baking-free brick without the addition of the excitant is as follows:

the cost of the gold tailings overflow mud baking-free brick added with the excitant is as follows: