TISCO is a joint venture, mainly producing special steel. Established in 1934, it is one of the key iron and steel enterprises in China. However, the waste residue discharged by TISCO has formed a veritable slag mountain in the 1970s, and it is still increasing at the rate of 50 tons per year. In the early 1980s, Zhashan Mountain expanded to 2 square kilometers, with an average height of13m and the highest point of 23m. In many places, the locomotive can't pull the slag truck, so the three slag trucks need one locomotive to pull and one locomotive to push. Around it, close to factories and residential areas. If it falls down again, it will devour its neighbors. When dumping slag every day, smoke should be splashed; Especially in winter, when the northwest wind blows, slag powder and dust wrapped in toxic substances cover the sky and gloomy Taiyuan. The most worrying thing is: if you want to produce, you must discharge slag. The higher the production efficiency, the more you need to discharge slag; If the slag can't be discharged, it will be difficult to produce. As one of the national key iron and steel enterprises, TISCO is facing the danger of paralysis, because there is nowhere to discharge slag! Taigang's leaders are even more worried.
In the early days of reform and opening up, the annual output of TISCO has exceeded one million tons, and the slag mountain has increased rapidly. The two major problems of time and money make TISCO unable to control the slag mountain, and even experts and scholars feel headache.
1983 During the Spring Festival, Li, who was about to retire, found Li Hongbao, the chief dispatcher, and put forward his own plan to contract Zhashan. The plan defines the method of "using slag to nourish slag, treating slag with slag and comprehensive utilization", and puts forward the idea of moving the slag mountain in seven years without any national investment. This year, Li is 6 1 year old. In fact, before he decided to contract the management right of Zhashan, he and his son took a tape measure to Zhashan for measurement. The results are surprising: the volume of the slag mountain is about 6.5438+million cubic meters, and the weight is about 6.5438+0.2 million tons. If it is transported by four Jiefang trucks every day, one way 10 km, four times a day, it will take 13 years to complete the transportation. But the results are also exciting: every 10 ton of steel slag contains more than 500 kilograms of scrap steel, and there are a lot of usable materials such as waste electrodes, waste magnesia bricks and waste nonferrous metals. The value of useful materials in the whole slag mountain is estimated to be more than 40 million yuan. Li's mind gradually formed a battle plan: treating slag with slag and nourishing slag with slag.
1On April 20th, 983, Li's plan for controlling the slag mountain was affirmed and supported by the leaders, and a contract for controlling the slag mountain was signed with Li, who was fully responsible for the whole control of the slag mountain.
1 983 may1day, labor day, Li came to Lushan with more than 600 people and hundreds of cars and tractors. Steel slag was dumped in Dahua ditch in Dongshan, Taiyuan. However, the Dahuagou was quickly filled, and there was no place to bury the waste residue. Li rode his bike around looking for a pit to backfill muck. When he found someone who built a house or built a road, he told people that the waste residue was strong, compressive and not afraid of corrosion, and we could provide it for free. In this way, he worked hard to control every tiny link of Zhashan.
The slag mountain dug by Li has entered the stage of screening, grading and development and utilization. However, due to the backwardness and lack of mechanical equipment, the progress of the project is seriously lagging behind. Screening steel slag and improving efficiency are contradictory. How to solve this contradiction makes Li think about it every day. Later, he finally thought of a way. He found a lot of scrap steel and discussed with his workers how to make some big funnels that can only hold 60 tons of waste residue. He worked day and night with everyone for more than 30 days, and finally made four big funnels, which cost only 700 yuan RMB. Since then, the efficiency of loading with funnel has increased by 9 times compared with before, and the annual loading cost has been saved by 360 thousand yuan.
By chance, when Li visited a steel plant in Beijing, he found a kind of equipment called magnetic separator. It is said that this machine is very efficient in screening small and medium-sized scrap steel. But it costs 6.5438 million yuan to buy a magnetic separator, so he brought back several large magnetic rollers when he returned to Taigang from Beijing. Finally, he and his workmates used their brains to assemble four double-drum magnetic separators and process hundreds of hand-held magnetic separators. In this way, in addition to recycling 6,000 tons of scrap steel every year and increasing income by 720,000 yuan, small iron sheets can also be cast into troublesome bars, which can produce 4,000 tons and earn 400,000 yuan every year.
In 2008, Li, who was over 80 years old, took his family to visit the slag field park. As the slag mountain became shorter and smaller, in the spring of the fourth year of slag treatment, a strong wind blew in Taiyuan one morning, and the slag dust of Taigang flew, which made people breathless. Li hurried to the hut to rub his eyes. He grabbed the waste residue and leaned against the wall of the shed. When he went up, he found that the wall could stop the dust, so he told everyone his thoughts. Finally, everyone decided to build a trapezoidal slope protection wall. However, if the square brick for repairing the wall is calculated at 600,000 yuan, it will cost 6.5438+0.5 million yuan more. In order to save costs, Li found two bricklayers and made six squares out of a bag of cement, sand and waste residue. The square bricks made by ourselves have better bearing capacity and lower cost than those bought. Using 600,000 square bricks as slope protection can save 700,000 to 800,000 yuan. This construction scheme has been affirmed and supported by the superior leaders. After several months' efforts, a dust-proof slope protection with a height of 13m, a width of 20m and a length of 2,500m was finally built, and the slag dust in Taiyuan could not be blown out any more. Finally, this project also earned 280,000 yuan. In order to beautify the slope protection, Li invited retired cadres who love afforestation and planting flowers and plants, and the party branch secretary of the former land hammer section to be responsible for the greening and beautification of the slag yard. After several years, flowers and trees were planted inside and outside the slag yard, up and down the dust-proof slope protection.
1988, the United Nations Environment Programme listed Li in the list of "Top 500 Global Environmental Protection and Improvement" and awarded Li the "Top 500 Global Environmental Protection and Improvement" gold medal.
From 1983 to 1995, after 12 and 8 months of hard work and unremitting efforts, Li and his slag control army * * * excavated and discharged 238 10000 tons of waste residue, and excavated and recovered1/kloc. The slag mountain area was reduced from 2 square kilometers to 0.54 square kilometers, making room for land 146.7 hectares. Taigang used this land to build more than 20 dormitories for staff and workers, and built schools and welfare houses, which provided favorable conditions for the development of Taigang.
Many foreign experts and celebrities visited Taigang and praised Li's spirit. "Double Spirit" is still the banner and precious spiritual wealth that China environmental protection circles talk about.