After the loading and unloading equipment was in place, all that was left was to install the mineral processing plant. The Ministry of Metallurgical Industry installed a set of mineral processing plant equipment brought from old time and space in Lingao. In order to save shipping tonnage and accumulate experience for future metallurgical machinery manufacturing, it was ultimately
Decided to install a set of self-made mineral processing equipment in Sanya.
The infrastructure project of the mineral processing plant was completed a year ago. The technology of the mineral processing plant is not complicated. The General Machinery Factory has accumulated some experience in manufacturing mineral processing equipment - it has built a coal preparation plant for Jiazi Coal Mine in the past.
The mineral processing plant is more complicated than the coal washing plant. The technical requirements are also high. Since the Cross-Crossing Group cannot manufacture large electromagnets, magnetic mineral processing is completely impossible. The mineral processing plant can only rely on the technically simple hydraulic jigging mineral processing method. This process
The technical requirements for equipment are relatively low.
In order to facilitate smelting, iron ore must undergo certain screening before being transported to the steel plant. The purpose of screening is to improve the efficiency of smelting, increase the iron tapping ratio, and improve the efficiency of coal use. Iron ore with an iron content of more than 65% can be directly
Entering the open hearth steelmaking, more than 45% is used for blast furnace ironmaking, and the ore less than 45% must be screened, crushed and sintered to increase the iron content of the ore to more than 45% before ironmaking can be made. Less than 25% is classified as
Lean ores are generally discarded. One of the characteristics of China's iron ore mines is that there are many lean ores, so steel companies generally import iron ore. The imported iron ore is basically concentrate powder that has been processed by the ore concentrator.
The ores in Tiandu and Shilu are rich ores, and the requirements for increasing the iron content by screening the ores are not high. The ore dressing plant is mainly based on ore crushing and classification. Whether it is an open hearth or a blast furnace, the iron ore needs to be crushed to a certain
The particle size can be fully utilized. The ore particles must be fine and consistent in size to increase the production of steel.
Sanya's mineral processing plant is located in Tiandu Town, where the Tiandu Mining Bureau is located - it is convenient to use the water source of Tiandu River Reservoir nearby: The jigging method requires a large amount of water: about 3000 to 4000 liters of water per ton of ore processed.
It is a large consumer of water resources. Therefore, the mineral processing plant has also built a water recycling and recycling system. It includes drainage channels, three-stage sedimentation tanks, filter tanks and pumping equipment. Mineral processing mainly uses the buoyancy of water, and does not have high requirements on the water quality itself. It can be used
Simple treatment of recycled wastewater.
After the ore is sent to the ore dressing plant by rail car, it is first crushed. The crushing is carried out three times, coarse crushing, medium crushing and fine crushing. Finally, the iron ore is crushed into 5~10mm ore particles. The ore is first poured into a cylindrical
Crusher. The principle of the crusher is very simple. It is a large cylinder with many cast iron bars installed inside. Driven by a belt, the cylinder rotates at high speed to crush the iron ore in the cylinder. The crushing rod inside the crusher
There are different sizes, and the crushing size can be adjusted by replacing them. However, in order to meet the requirements of continuous production, the mineral processing plant uses a special crusher for each process to save the time spent on replacing the crushing rods.
After each crushing is completed, the ore must be poured into a vibrating screening machine. The crushed ore particles are separated through vibration screening. The ore that meets the criteria for entering the next step is poured into the second crusher, and the ore that cannot pass through the screen holes is returned.
Continue processing in coarse crusher.
After the third crushing, the ore is poured into the spiral separator for mineral processing. The spiral separator is very efficient in processing the ore, and the metal ore recovery rate can reach 96% - and the labor intensity is very small. The appearance of the spiral separator is similar to the spiral in the park.
Slide. Its principle is: under the action of water, the ore flows downward along the spiral due to gravity. Due to friction and centrifugal force, the lighter waste rock particles move close to the outer edge of the spiral groove, while the heavier ore moves
The surface moves downward along the inner line. When it reaches a certain position, the ore particles are discharged by the interceptor installed on the inner edge of the spiral groove.
After passing through the spiral separator, the medium ore is obtained. The medium ore is treated by a hydraulic screen and then processed with a shaking table, and the final product is the concentrate. As for the medium ore, it can be used for repeated jigging processing.
The entire mineral processing plant is equipped with jigs, vibration screening machines, spiral separators, pulverizers, hydraulic screens and water shakers. In addition, a 20 cubic meter volume ore sintering furnace is planned to be built to sinter the ore powder. After testing, the entire mineral processing plant has
It can process 30 tons of ore per hour. Since the equipment is relatively simple, it is easy to expand the processing capacity as long as sufficient water sources are ensured.
The waves along the coast of Mayao Peninsula are lapping at the fringing reefs. Several medium-sized and small-sized boats are moored in the small bays on the shore, undulating with the waves. The land here is barren, with weeds and exposed red earth everywhere. There are not many.
A few trees swayed in the sea breeze. There are no rice fields common on both sides of the Wenlan River on the Mayao Peninsula. Large tracts of undeveloped wasteland are dotted with a few dry fields. In the old days, this place was the so-called "Golden Port Economic Development Zone"
", an economic development zone belonging to Hainan Province. However, in the old time and space, despite its auspicious name, the Gold Medal Development Zone was still struggling. A series of projects including the ro-ro terminal project in 1989 and the 6 million tons/year oil refining project in 1993
No large-scale projects have been settled here. By the beginning of the 21st century, this area was just an industrial land reserve.
In this time and space, the Planning Institute positioned this place as a heavy industrial zone in Lingao in the future. Since the Hongpai Development Zone had been stumbling in the old time and space, the Planning Institute finally named this place "Ma Niao Industrial Zone."
Originally, due to safety considerations, the steel and heavy chemical enterprises that crossed the group were generally located in the Wenlan River estuary area and outside Bairen City. This was limited by the available land area - most of the land along the river was paddy fields that had been developed for many years.
, it is a waste for agriculture to use it as an industrial zone, and the construction treatment of rice field foundations is also very troublesome - the development potential is limited, and there are also increasingly serious problems of water pollution and air pollution. The Planning Institute included steel in the plan,
The large-scale production bases of the chemical industry have gradually moved to the development zones on the Ma Niao Peninsula.
After the Battle of Chengmai, the power of the Senate expanded to the entire Hainan Island. The Ma'an Peninsula, which was originally close to the front line, became the core area of the rule of the Lingao regime. The Ma'an Commune is a "time-tested"; the sea control of the Qiongzhou Strait is controlled by the navy.
The Fubo Army's army base is located in Ma Niao Commune. The safety of the newly built steel and heavy chemical industrial zone has been reliably guaranteed.
Ma Niao Peninsula faces the sea on three sides, Hongpai Port to the east and Qiongzhou Strait to the north. It is 65 kilometers away from Haikou Health Station and 12 kilometers away from Lingao County. The development zone planned by the construction company consists of two groups in the east and west, with a planned area of 20.5 square meters.
kilometers. The land here is open and flat, mostly dry land, with only a small amount of paddy fields. The infrastructure is in good condition. The entire local permanent population is only nearly a thousand saltworks workers and their families in Ma Niao Commune, and there are no residential areas that require large-scale relocation.
A large-scale industrial zone suitable for large-scale development.
The development zone itself has a natural port called Hongpai Port. The total length of the coastline in the zone is about 16.5 kilometers. There are certain conditions for building a port. The road construction implemented by the Planning Institute in Lingao County: the "Small Cross Road" plan has been completed. At that time
The Bopu-Maya Highway, which was started urgently in preparation for the war, was paved with thousands of prisoner-of-war workers working day and night. The transportation links for the development and construction of the industrial zone have been initially solved.
According to the plan, the third phase of expansion of the steel industry should have started in April 1630. However, due to the impact of the Battle of Chengmai, work was in a semi-stop state for a time. However, the project was resumed as soon as the war ended. Thanks to the war dividends
——A large number of captive laborers were put into use, and the project barely caught up with the progress. As the Fubo Army began to occupy the entire Hainan Island, and with its authority, the collection and transportation of many materials was greatly accelerated, especially the large amount of wood needed for construction.
Supply is beginning to become abundant.
Ji Wusheng was wearing a pair of dusty, black work clothes, standing on a hill made of waste soil and looking down at the construction site of the entire iron and steel complex. The future Ma Niao Iron and Steel Complex will be located on this barren land.
Rise. Here is the temporary construction headquarters: a temporary house converted from a container is on the compacted flat land on the top of the hill. The blades of the wind turbine and anemometer are rotating rapidly in the sea breeze.
Below the hillside are temporary work sheds, specially designed for skilled workers to live in. The chimney of a boiler is smoking, providing hot water and hot meals for the entire construction site. Drinking water is brought from a few kilometers away by water tankers pulled by ox carts.
The water from the base is delivered by the water plant. The water from the Ma Niao River is purified there and then boiled before it is safe for consumption.
The manpower for the project came from prisoners captured in the second anti-encirclement and suppression campaign, as well as "special workers" captured during the security wars in Danzhou, Chengmai, Wenchang, Qiongshan and other places. They all lived in Ma Niao Army.
In the captive camp at the base, squadrons come to work on the construction site every day. The other part comes from "dispatched workers" from various communes and directly recruited labor - it has become a local practice to participate in construction for a short period of time and earn compensation by applying for work.
An important source of income for farmers.
Construction materials shipped from various factories are piled up in the stockyard: bundles of steel bars and bamboo bars used for casting concrete; steel and wrought iron profiles; various specifications of construction lumber and bamboo; stacks of red
Bricks and tiles; countless bags of cement stacked under the awning; rows of double-wheel tipping trolleys; refractory bricks from the bitter brine factory of Manao Saltworks...
Workers are building transportation access roads and laying temporary freight tracks to transport tons of goods to each construction site. Five or six mobile pot machines are spraying black smoke and white gas to supply cranes, pile drivers, mixers, etc.
Lingao local construction machinery provides power, the whirring of pile drivers, the creaking of cranes and the roar of mixers are mixed together.