With the current technology of the Xianguo, it is almost impossible to extract antimonide and arsenide gold and silver ores and dispose of them harmlessly, so we can only find a balance between cost, harm and economy.

Previously, in order to refine the platinum ore of Zhaocheng, a "abandoned furnace" smelting method was designed at the beginning.

Because the arsenic trioxide contained in the platinum ore produces a large amount of toxic steam in the smelting process, the smelting furnace is built alone in a sparsely populated place, and the smelting agent is used to catalyze the melting point of platinum much higher than that of arsenic trioxide, and the furnace temperature is controlled between six or seven hundred degrees, and then the person is withdrawn and allowed to melt by itself.

When arsenic trioxide and most of the low melting point harmful substances are melted into a liquid state, and the oxidation separation is accelerated under the action of the smelter, and the platinum is not melted at this time, the natural form exposes a large number of holes, precipitates with slag, and the molten liquid is retained in the smelting furnace, at this time, the structure controlled by pulleys, gears, levers and chains is used to open the furnace door in the distance, the molten liquid is led out of the furnace, and poured into the molten iron ladle preset in the ground, and it is cooled by itself, the furnace fire is burned out, and the dust settles, and the platinum with higher purity in the furnace and the toxic substances after separation can be obtained.

It then reciprocates until more platinum of higher purity is stored, smelted for the second and third abandonments, and chemicals are added to separate the remaining arsenide from the platinum until the higher platinum is purified for industrial use. The obtained hazardous solids shall be collected and stored in an appropriate manner, and shall be kept for harmless disposal when the technology is mature in the future.

Of course, the purity of the final platinum is not high, and to completely purify the platinum, highly toxic cyanide is required, or electrolysis and acidolysis replacement. However, activated carbon has a poor adsorption effect on cyanide and cannot filter cyanide in the air, so Bailiyan does not use cyanide washing and replacement method to refine precious metals, which not only cannot solve the gas toxicity, but more importantly, it is very difficult to dispose of cyanide.

Later, due to the input of activated carbon and rubber, gas masks began to be used for smelting toxic platinum, and the three-year abandoned furnace smelting method came to an end.

The abandonment furnace smelting method solves the poisoning of people, but the fundamental technical department has not solved it. First of all, the abandonment furnace smelting method, can not use more than 1,000 catties of industrial blast furnace, because the smelting process must stir the molten liquid to release the gas balance pressure generated, and observe the changes in the furnace, in order to adjust the furnace pressure at any time, the unattended furnace will be due to the change of pressure and uneven exhaust and the explosion of the furnace, the light furnace body is broken, the heavy explosion occurs, very dangerous.

The second is the smelting of toxic metals to produce the vaporization and vaporization of toxic solid substances, the purpose of abandoning the furnace is to avoid inhaling poisonous gas and death, so it can only wait for the molten liquid to be introduced, and the blast furnace itself to cool and solidify and the fuel is burned out, and wait for the air to settle, which will lead to the appearance of cold isolation and condensation slag in the furnace wall to stick to the furnace wall, which needs to be shoveled off, and the smelting furnace is scrapped and needs to be rebuilt.

The furnace technology of Xianguo has been very mature, the grade of the furnace depends on the use of refractory materials, if only one or two times of use, it can reduce the specifications of construction materials, reduce costs, realize large-scale standardized construction to reduce costs, but also reduce the cost of use.

In view of the poor adsorption of antimonide by activated carbon, the simple activated carbon filter has no effect, and it is more effective to use the abandoned furnace smelting method to extract Boyuanjun's ore.

Due to the roughness of the abandoned furnace smelting method, it is determined that there is a large amount of granular precious metals flowing out of the smelting furnace into the waste slag in the smelting process, so this process can be artificially controlled in advance, putting more fine crushed ore, building the bottom of the furnace into a steep slope, and emptying the furnace temperature at 700 degrees.

After the furnace is opened, it will not melt due to the high melting point of gold and silver, but the slag gold and silver that sinks at the bottom will be brought out by a handle of molten liquid, so how much gold and silver can be in this part depends entirely on the preparation before smelting.

When the technology matures in the future, there will be great profits in doing it again.

The final raw gold and silver will be smelted repeatedly with chemical agents until it meets the standards of purity and can be used to mint currency.

However, Bailiyan is also worried that the disposal of antimonide will be a thorny problem, whether it is slag after smelting, or purification of gold and silver, without flotation and cyanide washing, it is inevitable that there will be residual antimonide, which will be extracted by smelting alone, and it is difficult to achieve real purification and harmlessness under the current conditions, not to mention the sequelae of environmental pollution.

Specific operators need to make trade-offs between technology and the environment, and it is not necessarily undesirable to sacrifice the environment appropriately and reduce the technical requirements in exchange for economic benefits.

In addition, the development of electric power as soon as possible to realize electrolysis technology can effectively link technology and environmental pressure, through electrolysis and other physical means to extract antimonide, which can be used in semiconductors, wireless communications, bearings and special steels.

"My lord, this kind of trading will be very profitable, so that not only can you blackmail the gold and silver of the Liang Kingdom, but also get seven or eight hundred thousand gold and silver in cash, and I am afraid that there will be no such good thing to do in the world."

"According to Aiqing, how much gold and silver can the widow get in the end?"

It's hard to say, but it's definitely not the amount Ji Feng promised. However, the gold and silver ore contained in the slag, which cannot be refined at present, can not be obtained in three or five years, but in thirty or fifty years, and can only be left for the benefit of future generations. ”

"Well, the widow agreed to pay for the gold and silver ore in exchange for the gold and silver trade. How is Aiqing going to deal with the loan. ”

"The minister only promised Ji Feng 800,000 Singapore dollars, and now he is using gold and silver ore as capital, and wants to blackmail the minister to give in with 2 million Singapore dollars, and the minister thinks that the price is still too high and risky, so he will give him a maximum of 1.2 million Singapore dollars, to 1.3 million Singapore dollars, and the rest must be paid in cash."

"Well, the widow agrees. Although Qianfang is rich, it is not a bottomless pit, and it cannot be left to other countries to calculate the food on the plate of the widow. ”

"The king is wise, and the minister immediately sent a note to Bo Yuanjun to make a final negotiation with him. In addition, the minister also needs to send people to Liang to supervise the ore, so as not to be manipulated by him. ”

"Yes, exactly."

Bai Liyan judged that Ji Feng was actually reluctant to take out gold and silver ore as bargaining chips, even if it was a toxic gold and silver mine, it was still precious gold in the eyes of the world.

But everyone knows that how much metal is produced by ore smelting is clear to the smelter, once the ore goes abroad, it is ultimately the Xianguo that says, not the Liang Guo, if there are some deductions, it will be difficult for the Liang State to make effective countermeasures.

In this way, it can also be seen that gold and silver ore is Ji Feng's last bottom line, if he does not agree, it is difficult to say what unfavorable moves he will make.

At dusk, Bailiyan left the palace and returned to the house, Qiao Fu'er and the daughters had just returned to the house from the department store, and several maids waited for some snacks.

In addition to the daily breakfast, lunch and dinner are not on time, but Bailiyan has roughly set a rule, no main meal, dim sum should be used around noon, and dim sum should be used before the unitary time to stabilize blood sugar, so as not to cause diabetes and even pancreatitis due to hunger and fullness, and if you have diabetes now, it will be very troublesome.

The usual diet of Baili Yan is also quite careful, mostly light, a few delicate meat dishes, to avoid big oil and greasy, to get three highs.

As soon as she returned home, Bai Liyan summoned Xiao Chunyu, Qiao Fu'er, and Jiang Rong to the study, Lu Hou's meaning can't be hidden all the time, and her daughter is older, so she can't stay by her side all the time. And it is secular to marry at the age of sixteen, Bailiyan protects them to eighteen, according to modern terms, it is an older "saint", such as Jiang Rong is really rare to marry in her early twenties, the key is that no one dares to take it.

When he explained the meaning of Lu Hou concisely and in detail, the three girls were all silent. It's all meat that fell from their own bodies, who can bear to give it away.

"I said it, but I have a word with Luhou first, the dragon and phoenix will return to the dragon and phoenix, our family can't look at it or not, in addition, I agreed with Luhou that I can only marry after the age of eighteen, so Xiang'er, Caiyun, and Xuan'er still have a year or two of life, if you want to hurt, just hurry up, and in a year or two you will be someone's daughter-in-law."

Bai Liyan also felt quite nesty at this time, there were few such feelings before, but now as a father, Fang Jue's daughter is a caring little padded jacket, and he personally gave away the baby he had worn for more than ten years, and the reluctance and helplessness in his heart were like drinking a low-quality liquor, knocking on the door of his head while drinking, and his heart became more and more aggrieved and depressed.

At this time, two lines of tears appeared in Jiang Rong's eyes, but she endured it very strongly:

"I see, just do what you want."

Bai Liyan took out a handkerchief to wipe away the tears from the corners of Jiang Rong's eyes, and said softly:

"If Xiang'er and Fang'er can't look down on it, I will never force it, for the sake of my daughter, as long as I open my mouth for my husband, how can Luhou give me a few points."

"You don't have to give up any face, you are also for the good of your family. It's a pity that our sisters didn't give birth to a son for you, and they all benefited others. ”

Jiang Rong said this to Baili Yanxin, in the past 20 years of marriage, he has not had a son, as soon as he dies, the Yongxing Hou Mansion will collapse, and all the foundations he founded will be foreign surnames, and at this time, he can't help but feel a little lost and a little emotional.

At this time, Xiao Chunyu cried, covering her nose with a square towel and crying silently:

"How young is Xuan'er, how can I be willing to ......"

On the side, Lord Qiao grabbed Xiao Chunyu's hand and comforted:

"Sister don't cry, the woman is not staying, and finding a good family is also a great joy to create, not to mention the Lu Hou family, but the unattainable Hou family in the Xian country is not like the husband The foundation is still shallow, and he is often calculated by traitors. To be able to enter the Luhou family, I don't know how many years of rest will be the blessing, Xuan'er is slim and elegant, everyone knows that Luhou will not be treated badly. ”

There was no problem with Lord Qiao's words, and Bai Liyan thought that this woman had already sold Xiao Chunyu's girl.

Baili Xuan inherited the excellent bloodline of Baili Yan and Xiao Chunyu, and his appearance is extremely beautiful.

Not to mention that there is no second such beautiful woman in the two places of Chenling and the king's family, looking at the entire Central Plains, it is also difficult to find a beautiful woman who combines thousands of beauty and talents.