Platinum is a good thing, and its value lies not in its artificially endowed precious metal properties, but in its industrial use.

First of all, the rich mineral resources of platinum are mainly associated with five elements such as arsenic, tellurium, bismuth, antimony, and sulfur, and the purity is still very high.

It is followed by iron, nickel and copper, followed by gold, silver and molybdenum.

The sulphur-containing platinum ore is golden-silver in color, and the platinum-catalyzed combustion of alcohol can be easily identified.

The melting point of platinum is usually around 1,760 degrees, while ordinary coal can only reach a high temperature of 1,2300 degrees, and high-quality coal can reach more than 1,500 degrees.

Due to the high melting temperature and impurities of platinum, the current understanding of platinum is extremely limited, and it does not participate in economic circulation as a precious metal and currency.

The Black Turban Army grabbed "gold and silver stones", thought that they had discovered gold and silver mountains, mined and smelted them, but only obtained platinum and toxic alloys that could not be melted, and now the significance of discovering platinum is no less than the discovery of tungsten.

Platinum has a wide range of industrial paths, not to mention the strong magnet with cobalt elements, which is widely used in hydrogenation, oxidation, isomerization, cyclization, cracking, dehalogenation, dehydration, nitric acid and ammonia important catalysts, and bauxite can be made into heat-resistant soil with higher melting point and ultra-high temperature crucible, which is an important metal substrate for high-precision EDM molds and measuring tool standards.

In terms of current significance, modern artillery steel is based on nickel, chromium and platinum three-series metals as the core of iron-based alloy steel, which has many advantages such as high chamber pressure and high rigidity, and is widely used in the military field.

And more importantly, platinum is easier to obtain by smelting and extracting than chromium, and at present, it is obviously more economical and cost-effective than extracting chromium from red lead ore.

Zhou Kong wanted to know what Bai Liyan wanted Bai Liyan to do, but it was obvious that such secrets were not something she could know.

So in the morning, Fang Ke took Jiang Jie to the outside of the city, dug out the platinum underground, and dug up the slag containing arsenide telluride and incinerated it to make it oxidized and non-toxic.

Large-scale industrial production, the required ion exchange method and extraction method are not feasible, and the traditional compound solution metallurgy method, which requires complex chemical engineering, is only suitable for small dose extraction in the laboratory.

At the moment, there is no need to use it, but it is necessary to leave some mineral samples for later study.

The next night, Fang Ke and several cronies escorted him to wander the bush with the royal guests. At this time, Gongliangyi, who was far away in Yaoqu City to conquer the city, had just won a great victory for the Xianjun army, because Bailiyan did not send a war report, and it was not until after the fall of Yinqu and Gongcheng that the news reached Yaoqu City.

"I really didn't expect it, the Xianjun army won four cities in January without much effort, and Bailiyan really didn't waste his reputation." Gong Liangyi sighed, holding his hands behind, looking at the fire in the distance outside the city, his heart was complicated and heavy.

Gongliang Xiu said on the side:

"Father, the slave army is now in ashes, Chitose has lost one of his arms, and the child thinks that he should let people sneak into the rear of the rebels and spread the magic power to defeat Chitose in order to demoralize Chitose. At the same time, the supernatural power is a big injury this time, and it is very likely that troops and horses will be drawn from Xiaguan County.

Therefore, the child thought that after our army took Chengmu and Tangzhu, the southern front would be cultivated again, and on the one hand, he would transfer troops to the north to reinforce the eldest brother to attack Xiaguan, and on the other hand, he would send envoys to lobby Chitose to strive to stabilize the southern line, break through the northern line, and consolidate the Changyin County that had been laid. ”

"Well, this matter is something that my father has just thought, and the loss of troops this time will be less than sixty or seventy thousand, and it will be difficult to recover in a short period of time, and Ganfu and Shangguan are in the rear, and there are no soldiers available, so they will inevitably draw troops from Xiaguan. It's just that this war may develop faster than you and I estimate. ”

"What does Father mean?" Gongliang Xiu was puzzled.

"The reason why Bailiyan was able to take peace with the city this time is that its strategy and use of troops is only one of them, and the generosity of the Xian army is the biggest reliance. At present, the Black Turban Army is not as good as before, the morale of the army is scattered, and the hearts of the people are shaken, and in the face of the bounty offered by the Xian Army, seven or eight out of ten people are tempted. In the future, if the supernatural power loses another battle, I am afraid that all counties will have to look at the wind. ”

"What does Father mean?"

"Let your eldest brother take Xiaguan County and defend it in danger, and then after the Xian army goes north to defeat the supernatural powers, he will take Ganfu and Shangguan, so that Xiaguan County is in my pocket, and it will save a lot of trouble."

Then we will temporarily accumulate strength in Changyin County, if we can stabilize Chitose or make him surrender, if not, when your eldest brother goes to Xiaguannan County, after Bailiyan goes north to Ganfu, draw back some soldiers and horses from your eldest brother, and we will cross the river. ”

"Crossing the river? If you cross the river, you can divide the troops, father. The main force of the Black Turban Army and the Navy still exists, and the counties on the east bank have not been included in the bag of our army. ”

"No, just send out a surprise army to burn the grain and grass in Dekang County, whether it is the rebels on the northern or southern fronts, more than half of the grain and grass come from Dekang, and without half of the grain and grass, whether it is Chitose or Long Yuan, there is nothing to fear.

Moreover, my father has already heard that Huang Che, one of the five major naval governors of the rebel army, is a gambling and drinking person, and he is not in the same league as the rebels, as long as he can be persuaded to serve our army, this matter will be much easier. ”

Gongliangyi has already hit the riverside, took Miaocheng and obtained the mouth of the river, at this time, as long as the granary of Dekang County is burned, the rebels on the eastern front will be defeated, and the Zhi army will take seven or eight counties at a faster speed at the minimum cost.

However, Gongliang didn't know that the 200,000 army was rushing towards Changyin, but it was also not smooth.

When the 200,000 Black Turban Army transferred from the east passed through Queyun County, the water level soared due to heavy rains in the upper reaches, and the river in the Queyun County section of the Yunjiang River was diverted, and there was a flood that had not occurred in a hundred years, far exceeding the scale of the one 20 years ago.

Originally, he arrived in Dekang County in mid-to-late May to cross the river, but had to be postponed on the 15th to early June.

When Shentong heard the news, he was anxious and angry, since the defeat of the army a few days ago, he couldn't afford to be sick, and he was recuperating in the treatment center of the pennyhill, especially after learning that Zhou Kong surrendered, Shentong's complexion did not improve.

In May, the heavy rain did not stop, and a fast boat walked fast on the river, and the fleet not far ahead stretched from south to north, which was Huang Che's grain ship.

Huang Che went north from Pushui a few days ago to transport grain to Dekang County, but Fang Ke pounced and chased north.

"It's still easy to use, I can see it clearly." Fang Ke swore while putting away the eightfold telescope, and then said to the royal guest beside him: "Brother royal guest, raise the banner." ”

"Okay, raise the flag."

When the words of the royal guest fell, a large flag with the word "royal character" was hung on the mast, and at the same time, people were asked to paddle and speed up the boat.