In addition to the production-related personnel, most of the onlookers were also watching at close range.

At this time, the members of the chemical team led by Hou Xianglin, Cheng Dong, Mr. Zhao and several high school students were busy in front of various equipment, and the job of these people was to act as operators and show everyone the complete process of producing cement.

Therefore, at this time, the factory area was as lively as a vegetable market, and everyone was judging and watching with interest their specific operation of production equipment.

First of all, I saw Song Chen driving a shovel loader slowly past, using a bucket to shovel up the crushed limestone and a certain proportion of gypsum accumulated at the production site, and then accurately pouring it into the hopper on the conveying belt.

Hou Xianglin next to him immediately started the material belt, and after a while, the raw meal ball mill was filled with cement raw materials.

The ball mill jar is also miniature and can only hold about 800 kg of raw meal at a time.

At the same time, Cheng Dong Huanghai and Wei Dongli and Lan Bo, two muscular men, were sweating and sending coal to the boiler with a shovel and a shovel, it seemed that in the eyes of everyone, burning the boiler was the exclusive task of their brothers.

After a while, the steam engine not far away began to fire and pressurize, the pressure of the pressure gauge rose, and the high-pressure steam finally made the valve spew out white steam and make a snorting sound.

"Flame up!"

At this time, Cheng Dong stretched out his hand to Hou Xianglin and made an OK gesture.

Hou Xianglin immediately pressed the pump switch, and the motor drove the pump to start pumping water, and after a while, the ball mill tank was filled with water.

"Open the mill!"

After Mr. Zhao heard Hou Xianglin's shout, he struggled to move a half-person-high handle, and after a sonorous sound, the pulley driven by the steam engine made the ball mill rumble and rotate under the conduction of the clutch.

In this way, after the ball mill rumbled for half an hour, while the crowd of onlookers yawned, Hou Xianglin excitedly announced that the limestone fragments had turned into viscous mud and reached the fineness of calcination.

At the same time as the abrasives of the ball mill, several high school students, under the leadership of Qiao Xiaomu, Gui Xianning and others, began to ignite the pulverized coal burner, and then began to add special fuel to heat the fire in the vertical kiln.

This special fuel is a mixture of prepared coal and lignite, with the addition of waste cooking oil, commonly known as gutter oil.

It's just that as soon as this thing started to burn, the yard was immediately filled with a pungent smell, so that the onlookers all covered their noses, and then everyone finally remembered the mask that Brother Hou just said, so everyone began to look for masks to wear, and the yard became even more noisy for a while.

At this time, a smaller abrasive machine started, and it rumbled for ten minutes driven by the motor, turning the coal blocks piled up in the yard into pulverized coal, Qiao Xiaomu and others added gutter oil to it, and then stirred and mixed it in the abrasive for a while, and it was shoveled into the boiler, the calorific value of this fuel is not bad And it is fully combusted, and the thermal efficiency is quite high.

Although the operators are busy one by one, for a group of layman onlookers, all these process operations are actually quite boring.

When more people in the audience yawned constantly, some even retreated to the distant hillside and chatted, when a piercing whine sounded, which immediately attracted everyone's attention, and the surrounding crowd began to watch quietly again.

It was the sound of a centrifugal pump, and at this point the slurry in the ball mill tank had already begun to be poured into the vertical kiln from the top feed port.

Hou Xianglin shouted to everyone that this was a key step in cement production, and then took out his pocket watch a little nervously to look at the time, obviously he was pinching the stopwatch, muttering in his mouth, and calculating something with a serious face.

What people can't see is that at this time, the inside of the vertical kiln has already been burned to a very high temperature, under the action of the blower, the hot air flow from the bottom up meets the slurry falling from the top, the water vapor is rapidly evaporated, and the viscous mortar instantly becomes into fine pieces and falls to the bottom of the kiln under the action of high temperature thermal effect.

In this process, a large amount of gray-white gas suddenly emerges from the exhaust pipe in the water tank on one side of the vertical kiln, and bubbles bubble violently in the clear water in the tank, which is the phenomenon when the exhaust pipe on the side of the kiln discharges the water vapor in the vertical kiln to the water tank.

Because the water vapor also carried a small amount of mortar dust that did not have time to condense into lumps, the water in the sink suddenly became turbid.

During the whole process, Hou Xianglin looked at the time, carefully observed the temperature display of the vertical kiln, and adjusted the working status of the pulverized coal burner from time to time.

The atmosphere at the production site began to become a little solemn.

I don't know how long it took, when the onlookers felt a little bored again, Hou Xianglin signaled to turn off the pulverized coal burner, and then signaled to turn on the blower to blow fresh air into the mezzanine space of the vertical kiln.

At this time, Hou Xianglin finally spoke again, which made many people wake up from their half-confused and half-asleep state.

Hou Xianglin explained to everyone on the spot that the purpose of this is to cool down as soon as possible, and when the temperature drops to a suitable level, the air pump will blow the calcined clinker into fine pieces into the cement mill, which is a horizontal metal ball mill jar.

After a while, Chengdong and they began to add coal to the boiler to raise the fire, so that the output power of the steam engine was increased by a level, and the tank of the cement mill rotated at high speed through the drive of pulleys and gears.

About half an hour later, the tank stopped, Mr. Zhao instructed everyone to connect the pipe, and the air pump was turned on again.

This time, the cement clinker, which has become ash and powder, is blown down the pipe into the cement storage tank next to it......

When all the work procedures were completed, Hou Xianglin couldn't wait to run to the side of the storage tank, opened a small window on the tank, and shoveled out some freshly baked powder with temperature and put it in a bucket. There was a mixture of small half a bucket of fine sand and water, so everyone quietly watched Hou Xianglin squatting by the bucket, carefully observing the bucket without saying a word, and slowly stirring it from time to time......

Finally, Hou Xianglin raised his head and smiled at the onlookers:

"Everyone has seen the whole process, and the labor intensity is not large, right? Please note that this process is not exactly a traditional process, Anna's instruction manual says, this is a process for this set of micro equipment, very creative, I looked at the cement condensation in this barrel, well...... According to my many years of experience in construction supervision, this cement seems to be quite qualified......"

"What is the sign of qualification, Brother Hou?"

Someone in the crowd asked.

"The label, it's not clear yet, but it's definitely qualified, and the specific number will be announced in a few days......"

"Okay, then, is this considered a successful cement trial production?"

Someone in the crowd asked.

"Of course! A complete success! ”

After listening to Hou Xianglin's affirmative answer, everyone breathed a sigh of relief, I don't know who was the first to take the lead in applauding, and then the applause and cheers rang out, the movement was so loud that it overshadowed the sound of the sea tide in the distance, and the seabirds that had been hovering quietly fluttered their wings and left......

The next day, Hou Xianglin announced in the cave that after the cement sample was tested, the approximate number was 525, which basically belonged to Portland general cement, and if the limestone was sorted before the raw materials entered the furnace, and the proportion of gypsum was adjusted, the quality seemed to be improved a little. For this reason, Hou Xianglin also complained that the first trial production of gypsum seems to be a bit much, and he hopes to sort it in the next production.

However, Cao Limei, who was in charge of directing the mining operation, told Brother Hou in a dissatisfied tone that the mining of limestone was already tiring, and the gypsum in it could only be sorted by manpower, and only a few of us would definitely not be able to do it......

Obviously, there are still some problems with the production of cement, but everyone is still very satisfied with the results.

According to the current production capacity, about every five hours can produce 300 to 350 kilograms of cement, Hou Xianglin said, if Boss Luo's side of the conditions are met, the future task of the brick and cement industry is to paint a gourd to copy these equipment, in order to expand the output to meet our future construction needs.

However, everyone's current concern is obviously different from Hou Xianglin, everyone thinks that this is already very good, after all, they can produce their own cement, and the labor intensity is not as high as expected......