Chapter 137： This is for me to trouble myself

Set up a railway to directly lead to areas with richer minerals, and build sub-bases——

This is a super big project!

Together, it is even bigger than the current shelter.

But it must be done, not only related to the development of the shelter, but also related to the safety of their group.

is the so-called cunning rabbit three caves.

Since there are mutant zombies and behind-the-scenes, the shelter so close to the river bank is actually not very safe.

Because he cannot guarantee that the other party will not find here.

Once those people find the shelter, with the strength of that super zombie, it is almost certain to break in. No matter how many traps and weapons, I am afraid that they will not be able to stop the opponent. What's more, who can guarantee that there is only one such zombie? A single one might still be able to deal with it. What if the other party sends two or three or more?

An Kai naturally believes that the other party can't make so many super zombies. If that's the case, it would not be difficult to rule the world directly.

Don't be afraid of 10,000, but just in case, who can say for the future.

Therefore, it is necessary to prepare early. Once the enemy finds this place and launches an attack on the shelter, Ankai can take everyone to the sub-base as quickly as possible and blow up all the tunnels along the way. This way the enemy It's hard to catch it anymore. And everything must consider a cost-effective, if the cost of chasing them is too great, it will also become a very important factor in avoiding chasing.

Therefore, this sub-base must be far enough away. The farther it is, the harder it is for the enemy to catch up with them.

And Ankai's first plan for himself was fifty kilometers.

On the ground, fifty kilometers is nothing, and it is easy to reach it in one hour by car. Even in this not-so-good environment, it takes up to two hours.

But what if it is underground?

Passing through a subway tunnel, fifty kilometers is also nothing, but what if it is a completely collapsed tunnel? It is equivalent to reopening a fifty-kilometer tunnel.

If there is no professional drilling machine, this is definitely not a small project.

As long as the materials are sufficient, Ankai can make tunnels even faster than professional machines, so the first one is fifty kilometers.

In order to be safer, he plans to have a tunnel length of about 100 kilometers at the current stage. Therefore, at 50 kilometers, it should be a place similar to a transfer station or a storage room. The real sub-base is just 100 kilometers away. Alto!

So this is a super project.

According to the tunnel template given by the system, Ankai can extend a single section of the tunnel to a maximum of 50 meters.

A one-kilometer tunnel requires 20 such sections, while a 100-kilometer tunnel requires at least two thousand sections. On average, a 50-meter-long tunnel requires 200 units of cement, so 400,000 units of cement are needed for the entire project. This amount alone can scare individuals to death. I am afraid that there is not so much cement in the current riverside area, so after all, a large part of it needs to be burnt in a furnace.

This is very exaggerated, okay, the original furnace is not enough to support this amount of cement manufacturing projects, so Ankai needs a brand new furnace.

Moreover, the materials are far from enough at present, and mines need to be used exclusively for mining.

Thinking like this--

"Huh? What's the matter with this excessive workload!"

An Kai scratched his head, wondering if he had caused a lot of trouble for himself.

But for the sake of safety, there is no way for this kind of thing.

Without calculating how much material is needed for 400,000 units of cement, let's put the mine down first and let the mine mine limestone.

This is the important thing. If you accumulate a little bit, there is always a day when you can accumulate enough. And when Kent and the others go to exchange materials, they can also exchange cement, which is also a good choice.

Let's talk about making cement.

To make cement, two methods are given in the system, namely shaft kiln calcination and rotary kiln calcination.

The kiln in which the kiln body is set up without rotating is called a shaft kiln. Specifically, it is divided into an ordinary shaft kiln and a mechanized shaft kiln.

Ordinary shaft kilns are manual feeding and unloading or mechanical feeding and unloading; mechanical shaft kilns are mechanical feeding and unloading. The mechanical shaft kiln is continuously operated, and its output, quality and labor productivity are higher than ordinary shaft kilns. So there is no need to think about Ankai here, it must be a mechanical shaft kiln.

As for the rotary kiln, it refers to a kiln in which the kiln shell is placed horizontally and capable of rotating motion.

Two kinds of kilns, the former is suitable for small factories, and the latter is suitable for medium and large factories.

With the current conditions of the shelter, it must be a vertical kiln.

is the current shelter, and Ankai will continue to expand. The sub-base is important, but the main base is not guaranteed to be abandoned.

He just made such preparations and backup plans. Maybe those people can't find this place at all?

In the case of a rotary kiln, there are dry kilns for calcining raw meal powder and wet kilns for calcining slurry.

Dry kiln can be divided into hollow kiln, waste heat boiler kiln, suspension preheater kiln and suspension calciner kiln.

There is a calcining process in the system that can greatly increase the output of the rotary kiln-the decomposition technology outside the kiln.

Its characteristic is the use of a precalcining kiln, which is based on a suspension preheater kiln, with a decomposing furnace added between the preheater and the kiln.

Add 50% to 60% of the total fuel consumption in the calciner, so that the fuel combustion process, the preheating of raw meal and the carbonate decomposition process are moved from the area with low heat transfer efficiency in the kiln to the calciner. , The raw meal exchanges heat with the hot air stream in the suspended state or boiling state so as to improve the heat transfer efficiency, so that the calcium carbonate decomposition rate of the raw meal before entering the kiln reaches more than 80%.

Achieve the purpose of reducing the heat load of the kiln, prolonging the service life of the kiln lining and the operation period of the kiln, and greatly increasing the output while maintaining the heating capacity of the kiln.

In the case of a wet process kiln, the raw meal is specifically produced into a slurry with a water content of 32% to 40%. Since it is prepared into a fluid slurry, the raw materials are mixed well, the raw meal composition is uniform, and the quality of the fired clinker is high, which is the main advantage of wet production.

wet process kiln can be divided into wet process long kiln and wet process short kiln with slurry evaporator. In order to reduce the heat consumption of the long wet kiln, various types of heat exchangers are installed in the kiln, such as chains, slurry filter preheaters, metal or ceramic heat exchangers.

Both methods have their own advantages and disadvantages.

But for An Kai, he does not need workers to use it specifically, so the dry kiln should be the best choice for him.

It is a pity that the shelter is currently unable to support such a large-scale production, so other equipment will also be upgraded, and the entire shelter must be upgraded simultaneously. Including mines, electricity, transmission, water, ventilation...

"I really want to really trouble myself."

The more I thought about it, the bigger my head became, An Kai rubbed his eyebrows, and could only sigh helplessly.

But to survive, what else can I say?

淦!

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