People get along with each other, some get along and some don't. Mineral processing agents are the same - some can be used in combination for better results, while others can "fight" together and render each other ineffective.

Today, we will talk about the interesting ways of getting along in mineral processing sites from the perspective of the "personality" and "compatibility" between reagents.

1、 Sulfuric acid with a hot temper

Sulfuric acid has an important use in mineral processing: it activates certain oxidized minerals. Some mineral surfaces have formed a layer of "rust" due to oxidation, which cannot be adsorbed by collectors. Sulfuric acid can wash away this "rust" layer, exposing the mineral to a fresh surface, so that the collector can capture it smoothly.

But sulfuric acid has a 'temper tantrum' - it attacks many organic agents.

The most typical example is yellow medicine. Huangyao is the most widely used collector in gold flotation, but it will undergo decomposition reaction when encountering sulfuric acid, losing its collection ability. It's like you just took a bath for minerals and ended up wearing out your swimsuit as well.

So, if sulfuric acid is needed for activation treatment in the process, the beneficiation engineer will pay attention to the sequence: either finish the sulfuric acid work first, then return the slurry to an alkaline environment, and finally add yellow medicine; Either simply switch to an acid insensitive collector, such as black medicine. Black medicine is much more stable than yellow medicine in acidic environments and is not easily decomposed.

2、 Water glass that wants to manage everything

Water glass is a versatile potion. It can suppress vein minerals such as quartz and silicate, preventing them from floating up with gold; It can also serve as a dispersant, dispersing small particles that are prone to clumping in the slurry.

But water glass also has a characteristic: it can change the acidity or alkalinity of the slurry. If the amount added is relatively large, the originally adjusted pH value may change. Once the pH value changes, the performance of other agents will be affected - some agents need to be effective in alkaline environments, while others are only effective in acidic environments.

So, when using water glass, engineers will pay attention to its "chain reaction" on the entire system, and may need to add some adjusting agents later to balance it.

3、 Assist Master "Copper Sulfate

Copper sulfate plays a unique role in mineral processing - it is an activator specifically responsible for "awakening" the suppressed minerals.

Some gold is closely associated with minerals such as pyrite and arsenopyrite, and is encapsulated inside, making it difficult for collectors to come into direct contact. The function of copper sulfate is to undergo displacement reactions on the surface of these minerals, forming a thin film that is particularly prone to being adsorbed by collectors. The mineral that was originally 'silent' can be 'activated' and smoothly float up.

The combination of copper sulfate and yellow medicine is quite seamless, making it a "golden partner". In the treatment of many difficult to select gold mines, using copper sulfate together with yellow medicine is much more effective than using yellow medicine alone.

4、 Lime and certain chemicals that are incompatible with water and fire

Lime is one of the most commonly used adjusters in mineral processing. It is mainly responsible for adjusting the slurry to an alkaline environment, while also suppressing impurities such as pyrite.

But lime also has its "nemesis". Some chemicals need to be in weakly alkaline or even neutral environments to achieve optimal effects. If there is too much lime and the alkalinity of the slurry is too strong, these chemicals will actually fail. There are also some organic inhibitors that can be structurally damaged and lose their inhibitory ability under strong alkaline conditions.

So, whether to use lime and how much to use depends on the compatibility of the entire pharmaceutical system. Sometimes it is necessary to find other pH adjusters to replace lime, such as sodium carbonate. Sodium carbonate has weaker alkalinity than lime and is more "friendly" to certain chemicals.

5、 The 'good temper' of environmentally friendly chemicals

An important principle considered in the design of environmentally friendly beneficiation agents is to be as compatible as possible with existing chemical systems and process flows.

Compared with traditional sodium cyanide, environmentally friendly chemicals are more "easy-going" in terms of "personality". It can work under the same alkaline conditions and can be used in conjunction with existing adjusters, collectors, and activators, without the need for mining companies to significantly modify equipment or adjust processes.

This means that switching from traditional pesticides to environmentally friendly pesticides is more like a "dressing change" rather than a "prescription change". Mining enterprises can smoothly complete green transformation without having to start over from scratch.

6、 Mediation work of mineral processing engineers

After understanding the "personality" and "phase" of these reagents, it is not difficult to understand why the work of mineral processing engineers is so important.

They need to design a set of chemical systems that "make everyone compatible" based on the characteristics of each type of ore

• What medications can be added together?

• Which medications must be added separately and in order?

• After adding this medication, is it necessary to add another one to 'neutralize' its effects?

• Is the poor effect of a certain medication due to insufficient dosage or interference from other medications?

The answers to these questions often need to be explored through specialized mineral processing experiments. The composition of ores from different mines varies greatly, and the formula with good effect from mine A may not be suitable for mine B. This is also why the use of mineral processing agents is known as an "art of fine control".

Each mineral processing agent has its own "personality" - some gentle, some strong, some easy-going, and some sensitive. Some of them cooperate seamlessly, while others are incompatible. Only by understanding these "personalities" and "similarities" can we design the most suitable chemical scheme at the beneficiation site, allowing each chemical to play its maximum role in its own position.