Although Zhang Yi can guarantee that the plan he wrote will have obvious results, he still wants to know about the recent plans and experimental effects of the technology center.

After all, the more you know, the more targeted the plan is, just like treating a disease and saving people, you first have to know where the disease is.

"Director Yang, did you choose two closed-circuit processes, is it because the grinding time is short and the dissociation is not enough, and the long time is easy to cause mud?" Zhang Yi asked, pointing to the experimental report in his hand.

The ore mined from the ground is mixed with many gangue minerals, such as quartz, silicate minerals, calcite, etc., which must be separated by grinding and then enriched, and finally obtain a relatively pure lead-zinc concentrate.

At present, the best solution for the indicators of the technology center is to adopt a two-stage closed-circuit grinding process, but the problem in this process is also obvious, that is, the grinding time is broken, the inclusion is serious, and the grinding time is long, so it is mud agglomeration and cannot be recovered.

"Yes, it is. Seeing Zhang Yi say what the problem was, Director Yang's heart warmed up a little more.

Liu Xiang disagreed, in his opinion, before Director Yang brought Zhang Yi to the laboratory, he would definitely discuss the situation of the experiment with him, as Zhang Yi just said, as long as there is some theoretical knowledge of mineral processing, you can guess.

"Have you tried grinding aids in the experiment, and what is the effect?" Zhang Yi asked.

Grinding aid, as the name suggests, is when grinding, a little medium is added to make grinding easier, just like when frying chestnuts, some black sand will be added, which is easier to transfer heat.

This is also a more commonly used method in the grinding process.

"This ...... Xiao Liu, you can introduce it, you can also raise any questions, and more exchanges will have a better plan. Director Yang turned his head to Liu Xiang and said, then waved him to sit down.

Although Director Yang knew some, he didn't know about many of the problems that occurred in the trial process, he just knew that the final plan would not work.

"Well, we've tried some grinding aids, such as sodium hexametaphosphate, sodium pyrophosphate, but the effect is not obvious. Liu Xiang was just standing next to him, waiting for Director Yang to tell him to do something, and now let him participate in the discussion, so he pulled a chair and sat down next to him.

"In fact, you can consider a composite grinding aid. Zhang Yi said.

"Compound grinding aids?Is it adding several grinding aids at the same time?" Director Yang frowned, he hadn't heard of this thing, it sounded like a few things in one.

Liu Xiang didn't understand either, so he didn't talk to him.

Zhang Yi said with a smile: "Actually, it is true, the principle of grinding aid is to help the grinding medium separate the minerals and gangue, which is in line with the theory of 'adsorption to reduce hardness'." ”

"The adsorption of grinding aid molecules on the surface of the particles reduces the surface energy of the particles, which causes the position of the lattice on the surface to migrate, and at the same time prevents crack closure and promotes crack propagation, so different adsorbents can be added to enhance these effects. ”

Director Yang shook his head after listening for a long time, and sighed: "Eh, brother, where did you learn this, I have been in a technical position for more than 20 years, and I feel that I don't know as much as you." ”

"Director Yang, I don't dare to agree with what you say, I only know some theoretical knowledge at most, and I am far worse than Director Yang in field experience. Zhang Yi smiled, "I'll figure it out on my own, and I like to collect foreign technology, so I know more." ”

"I see, foreign technology is better than ours. Director Yang nodded, no wonder Zhang Yi is so powerful, he likes to study foreign technology.

Zhang Yi carefully flipped through the report again, and the report was thick and had to have hundreds of pages, which were all records of the experimental data and experimental effects in the past month.

"Well, that's pretty much it. Zhang Yi put the report aside, and after reading it, he already knew it in his heart.

Zhang Yi stumbled on the technical plan in the experiment book.

His plan is based on the report and mineral analysis provided by Director Yang, and he does not dare to say that he can immediately reach the production target, but the results will definitely be much better than the results made by the previous technology center.

After all, the experiment has to be done for a long time, and according to his plan, as long as the experiment is done for a certain period of time, the target will definitely be achieved.

Director Yang and Liu Xiang kept looking at the side, Zhang Yi was very fast, and what he wrote was also a bit profound, and he needed to understand that Director Yang and the two couldn't keep up with Zhang Yi's pen speed.

The plan is densely packed with four pages, and the technical route, flow chart, and the plan that needs to be tested are clearly written.

When Zhang Yi finished writing, his hands were sore, and in order to ensure the integrity of his thoughts, he wrote it in one breath without pause.

"Director Yang, the technical plan has come out, you follow this, do more experiments, and it's no problem to reach the target. Zhang Yi pushed the experiment book in front of Director Yang and said lightly.

"This is a complete technical solution? That's great. Director Yang took the experiment book, flipped through it, and said to Liu Xiang happily: "Xiao Liu, you arrange it immediately, and now immediately carry out experimental exploration." ”

Liu Xiang was also a little shocked in his heart, Zhang Yi read it very carefully when he wrote the plan, and the technology explained in the plan was very detailed, and he almost wrote out the experimental operation method by hand.

Moreover, the size ratio of the steel ball used in the abrasive is actually calculated by calculus function, which looks very high-end.

"Okay, I'll arrange it. Liu Xiang took the experiment and went to the laboratory in a hurry.

Zhang Yi stayed in the main control room with Director Yang, there was a place to sit, there was an air conditioner blowing, and the outside laboratory was full of equipment and instruments that needed to be operated.

In the laboratory, several experimenters are busy.

"Brothers, there's work to do. Liu Xiang shouted loudly when he entered the laboratory, he is now a technician, enjoys the treatment of deputy section, and is the leader of the experimental group of the technology center.

"There's a new plan? Eh, I said team leader, can we be reliable, the two ends of the plan in the past three days can exhaust us. Tian Feng, who was working on the ball mill, was a little short and fat, and was a little resentful.

"Lao Tian, don't fix these useless things, you have to do the work. Liu Xiang made a straight face, now is the critical moment to tackle key problems, and there is no room for sloppiness.

"Okay, work hard. Thinking that Director Yang had just come, this plan came out, and this plan must have something to do with the leader, Feng Qi, who was sifting the mine next to him, didn't understand it, and immediately gave others a look and said with a sloppy look.

The experiment was quickly arranged, there were grinding, screening, adjusting agents, and flotation, and the whole laboratory was immediately busy.

After two hours, the results of the first experiments came out, and the whole laboratory was boiling.

"Hold the grass, this plan is too good, the indicator is rubbing up. ”

"I hung it, and sure enough, the leader's plan worked. ”

"It's a matter of minutes. ”

The experimenters all gathered together, staring at the experiment sheet in Tian Feng's hand and discussing, Liu Xiang grabbed the report sheet with the experimental results, turned around and ran to the main control room.

"Director Yang, the experimental results are out, and the lead-zinc concentrate index has increased by 6 percentage points, almost reaching the target. Liu Xiang just stepped into the main control room, still panting, but he didn't forget to raise the data report sheet in Yang's hand, and said excitedly.