阅读说明：本技术 一种低成本新型环保纱管原纸的制造方法 (Manufacturing method of novel low-cost environment-friendly bobbin base paper ) 是由 翟冬雨 蒋旭 陈务平 姚利军 李龙 于 2021-09-07 设计创作，主要内容包括：本发明公开了一种低成本新型环保纱管原纸的制造方法,涉及造纸技术领域,高炉炉渣经脱硫提纯处理后调质成对人体无害的矿物棉,碎浆机粉化后在贮浆池沉淀,与经过废纸破碎贮浆的浆池通过自动比例调节阀精确配比混合,采用阳离子淀粉和非离子型助剂进行搅拌,重新贮浆成池,通过抄片机、压光机、卷纸机、复卷机制做成低成本新型环保用纱管原纸,纸板经定量、厚度、环压指数、内结合强度等指标检验,满足了客户的使用要求,改善了我国造纸原料不足的现状。(The invention discloses a manufacturing method of low-cost novel environment-friendly bobbin base paper, which relates to the technical field of papermaking, wherein blast furnace slag is subjected to desulfurization and purification treatment, then is tempered into mineral wool harmless to human bodies, a pulper is pulverized and then is precipitated in a pulp storage tank, the mineral wool and the pulp storage tank subjected to waste paper crushing and pulp storage are mixed in a precise ratio through an automatic proportional control valve, cationic starch and nonionic auxiliaries are adopted for stirring, the pulp is stored again into a tank, a low-cost novel environment-friendly bobbin base paper is manufactured through a sheet making machine, a calender, a paper winder and a rewinder, and the paper board is subjected to quantitative, thickness, ring crush index, internal bonding strength and other index tests, so that the use requirements of customers are met, and the current situation of insufficient papermaking raw materials in China is improved.)

1. A manufacturing method of low-cost novel environment-friendly bobbin base paper is characterized by comprising the following steps: the method comprises the following steps:

s1, separating the molten iron slag after tapping the molten iron, sending the molten iron slag to a desulfurizing furnace, and adding liquid lime and Al₂O₃Heating blast furnace gas to remove sulfur and impurities in the slag;

s2, making the processed high-temperature slag flow into a tempering furnace to prepare inorganic cotton, adding water into the inorganic cotton through a pulper for defibering, and storing the inorganic cotton in a pulp tank;

s3, the waste paper is used as a raw material, the waste paper is crushed and then placed into a waste paper pulp storage tank for storage, and the inorganic cotton pulp liquid and the waste paper pulp liquid are mixed according to the weight ratio of 5-10: the method comprises the following steps of (1) accurately proportioning 85-90% to form a new slurry pool, and stirring 1-3% of cationic starch and 0.1-0.8% of non-ionic auxiliary agent to serve as raw materials for manufacturing bobbin base paper;

s4, dewatering the prepared pulp on a net through a circular net former to form wet paper sheets, dewatering the wet paper sheets to dryness of 45-48% through a three-path large-roll-diameter pressing part after compounding, and evaporating the wet paper sheets to dryness of 90-92% in a drying part;

s5, drying, and then sending to a calender for calendering and finishing the surface of the decorative paper, so as to improve the interlayer bonding strength, tightness and bursting strength of the paper;

and S6, calendering the paper, rewinding the paper by a rewinder to prepare bobbin base paper, cutting the base paper into the paper roll size required by a customer after the base paper exits from a paper roll shaft, weighing, packaging, warehousing and delivering goods.

2. The manufacturing method of the novel low-cost environment-friendly bobbin base paper according to claim 1, characterized in that: the blast furnace slag for manufacturing the inorganic cotton comprises the following raw materials in percentage by weight: CaO: 30 to 45 percent of SiO₂：25%～40%，MgO：5%～15%，Al₂O₃：5%～15%，FeO：0.2%～0.8%，S：0.5%～1.5%，TiO₂: 0.50 to 1.50 percent, and the balance of impurities.

3. The manufacturing method of the novel low-cost environment-friendly bobbin base paper according to claim 2, characterized in that: the blast furnace slag for manufacturing the inorganic cotton comprises the following raw materials in percentage by weight: CaO: 33 to 43 percent of SiO₂：31%～38%，MgO：8%～15%，Al₂O₃：9%～15%，FeO：0.3%～0.8%，S：0.7%～1.5%，TiO₂: 0.60 to 1.50 percent, and the balance of impurities.

4. The manufacturing method of the novel low-cost environment-friendly bobbin base paper according to claim 2, characterized in that: the blast furnace slag for manufacturing the inorganic cotton comprises the following raw materials in percentage by weight: CaO: 30 to 38 percent of SiO₂：25%～33%，MgO：5%～10%，Al₂O₃：5%～12%，FeO：0.2%～0.5%，S：0.5%～1.2%，TiO₂: 0.50 to 1.20 percent, and the balance of impurities.

5. The manufacturing method of the novel low-cost environment-friendly bobbin base paper according to claim 2, characterized in that: the blast furnace slag for manufacturing the inorganic cotton comprises the following raw materials in percentage by weight: CaO: 32 to 43 percent of SiO₂：26%～33%，MgO：6%～12%，Al₂O₃：6%～12%，FeO：0.4%～0.7%，S：0.6%～1.2%，TiO₂: 0.60 to 1.20 percent, and the balance of impurities.

Technical Field

The invention relates to the technical field of papermaking, in particular to a manufacturing method of low-cost novel environment-friendly bobbin base paper.

Background

Along with the rapid development of economy, the using amount of paperboards and paper products in China is steadily increased, the demand of bobbin base paper is particularly outstanding, the using amount of the bobbin base paper in China is about 300 ten thousand tons every year, the bobbin base paper is produced by adopting wood and waste paper raw materials and has huge influence on the environment, the bobbin base paper is widely applied to chemical fibers, textiles, films and the like, the requirements on indexes such as tensile strength, ring crush strength and the like of paper are high, the novel environment-friendly raw materials are developed with high quality, and the novel environment-friendly raw materials have long-term significance on the subsequent development of enterprises.

Disclosure of Invention

Aiming at the technical problems, the invention overcomes the defects of the prior art and provides a method for manufacturing novel environment-friendly bobbin base paper with low cost, which comprises the following steps:

s1, separating the molten iron slag after tapping the molten iron, sending the molten iron slag to a desulfurizing furnace, and adding liquid lime and Al₂O₃Heating blast furnace gas to remove sulfur and impurities in the slag;

s2, making the processed high-temperature slag flow into a tempering furnace to prepare inorganic cotton, adding water into the inorganic cotton through a pulper for defibering, and storing the inorganic cotton in a pulp tank;

s3, the waste paper is used as a raw material, the waste paper is crushed and then placed into a waste paper pulp storage tank for storage, and the inorganic cotton pulp liquid and the waste paper pulp liquid are mixed according to the weight ratio of 5-10: the method comprises the following steps of (1) accurately proportioning 85-90% to form a new slurry pool, and stirring 1-3% of cationic starch and 0.1-0.8% of non-ionic auxiliary agent to serve as raw materials for manufacturing bobbin base paper;

s4, dewatering the prepared pulp on a net through a circular net former to form wet paper sheets, dewatering the wet paper sheets to dryness of 45-48% through a three-path large-roll-diameter pressing part after compounding, and evaporating the wet paper sheets to dryness of 90-92% in a drying part;

s5, drying, and then sending to a calender for calendering and finishing the surface of the decorative paper, so as to improve the interlayer bonding strength, tightness and bursting strength of the paper;

and S6, calendering the paper, rewinding the paper by a rewinder to prepare bobbin base paper, cutting the base paper into the paper roll size required by a customer after the base paper exits from a paper roll shaft, weighing, packaging, warehousing and delivering goods.

The technical effects are as follows: according to the invention, the blast furnace slag is subjected to environment-friendly treatment to obtain the mineral wool with high strength and excellent compression resistance, and the mineral wool is mixed with the waste paper stock slurry tank to prepare the slurry after being reasonably proportioned, so that a novel paper making technology is obtained, the resources of wood and waste paper are effectively reduced, the quality of products is improved, the social environment treatment is promoted, and the sustainable development of the paper making industry is facilitated.

The technical scheme of the invention is further defined as follows:

the method for manufacturing the novel low-cost environment-friendly bobbin base paper comprises the following raw materials in percentage by weight: CaO: 30 to 45 percent of SiO₂：25％～40％，MgO：5％～15％，Al₂O₃：5％～15％，FeO：0.2％～0.8％，S：0.5％～1.5％，TiO₂: 0.50 to 1.50 percent, and the balance of impurities.

The method for manufacturing the novel low-cost environment-friendly bobbin base paper comprises the following raw materials in percentage by weight: CaO: 33 to 43 percent of SiO₂：31％～38％，MgO：8％～15％，Al₂O₃：9％～15％，FeO：0.3％～0.8％，S：0.7％～1.5％，TiO₂: 0.60 to 1.50 percent, and the balance of impurities.

The method for manufacturing the novel low-cost environment-friendly bobbin base paper comprises the following raw materials in percentage by weight: CaO: 30 to 38 percent of SiO₂：25％～33％，MgO：5％～10％，Al₂O₃：5％～12％，FeO：0.2％～0.5％，S：0.5％～1.2％，TiO₂: 0.50 to 1.20 percent, and the balance of impurities.

The method for manufacturing the novel environment-friendly bobbin base paper with low cost is used for manufacturing the blast furnace slag bag for inorganic cottonThe material comprises the following raw materials in percentage by weight: CaO: 32 to 43 percent of SiO₂：26％～33％，MgO：6％～12％，Al₂O₃：6％～12％，FeO：0.4％～0.7％，S：0.6％～1.2％，TiO₂: 0.60 to 1.20 percent, and the balance of impurities.

The invention has the beneficial effects that:

(1) the invention prepares the low-cost inorganic mineral wool harmless to human body by desulfurizing and purifying the blast furnace slag, belongs to metallurgical waste furnace burden, adopts negative energy manufacturing, and has low manufacturing cost;

(2) the sulfur and the calcium oxide of the blast furnace slag components belong to harmful substances, and a high-temperature separation technology is carried out through the physical properties of the substances in the cotton manufacturing process, so that a clean pollution-free production technology is realized;

(3) the use amount of the industrial cotton is increased to 5-10%, the use amounts of waste paper and wood are effectively reduced, and the carbon neutralization task amount of enterprises is increased;

(4) the invention adopts inorganic mineral wool as raw material to manufacture the bobbin base paper, the product bonding mechanism is obvious, the interlayer bonding strength, tightness and bursting strength are high, the physical properties are better than those of the original wood paper, and the requirements of low cost and high quality are realized;

(5) the invention realizes the proportioning of mineral wool and waste paper in proportion in the pulp chest, achieves the best proportioning for manufacturing bobbin base paper, and improves the performance of the physical strength of the existing paper.

Drawings

FIG. 1 is a metallographic structure diagram of example 1.

Detailed Description

Example 1

The manufacturing method of the novel low-cost environment-friendly bobbin base paper provided by the embodiment comprises the following steps:

s1, separating the molten iron slag after tapping the molten iron, sending the molten iron slag to a desulfurizing furnace, and adding liquid lime and Al₂O₃The blast furnace gas is adopted for heating, and harmful substances such as sulfur, impurities and the like in the slag are removed;

s2, making the processed high-temperature slag flow into a tempering furnace to prepare inorganic cotton, adding water into the inorganic cotton through a pulper for defibering, and storing the inorganic cotton in a pulp tank;

s3, the waste paper is used as a raw material to be crushed and then is put into a waste paper pulp storage tank to be stored, and the inorganic cotton pulp liquid and the waste paper pulp liquid are mixed according to the proportion of 8%: the raw materials are mixed accurately according to the proportion of 88 percent to form a new slurry pool, and the slurry pool is stirred by adopting 2 percent of cationic starch and 0.6 percent of non-ionic auxiliary agent and is used as a raw material for manufacturing bobbin base paper;

s4, dewatering the prepared pulp on a net through a circular net former to form wet paper sheets, dewatering the wet paper sheets to 46% dryness through a three-path large-roll-diameter pressing part after compounding, and evaporating the paper sheets to 91% dryness in a drying part;

s5, drying, and then sending to a calender for calendering and finishing the surface of the decorative paper, so as to improve the interlayer bonding strength, tightness and bursting strength of the paper;

and S6, calendering the paper, rewinding the paper by a rewinder to prepare bobbin base paper, cutting the base paper into the paper roll size required by a customer after the base paper exits from a paper roll shaft, weighing, packaging, warehousing and delivering goods.

Wherein, the blast furnace slag for manufacturing the inorganic cotton comprises: CaO: 36% of SiO₂：35％，MgO：11％，Al₂O₃：11％，FeO：0.5％，S：0.8％，TiO₂: 0.96 percent, and the balance of impurities.

Example 2

The present embodiment provides a method for manufacturing a low-cost novel environmentally friendly bobbin base paper, which is different from embodiment 1 in that the blast furnace slag for manufacturing inorganic cotton includes: CaO: 31% of SiO₂：273％，MgO：8.8％，Al₂O₃：6.7％，FeO：0.3％，S：0.7％，TiO₂: 0.79%, and the balance being impurities.

Example 3

The present embodiment provides a method for manufacturing a low-cost novel environmentally friendly bobbin base paper, which is different from embodiment 1 in that the blast furnace slag for manufacturing inorganic cotton includes: CaO: 34% of SiO₂：27％，MgO：8％，Al₂O₃：7.2％，FeO：0.35％，S：0.88％，TiO₂: 1.1 percent and the balance of impurities.

The results of the paperboard property tests of example 1, example 2 and example 3 are shown in the following table:

examples	Quantitative (g/m)2)	Thickness (mm)	Ring crush index (vertical and horizontal N m/g)	Internal bond Strength (J/m)2)
					Example 1	423	0.58	25.1/18.1	720
Example 2	419	0.59	23.8/16.9	713
					Example 3	421	0.57	24.6/17.3	719

As shown in figure 1, through metallographic analysis and by adopting mineral wool for papermaking, the product combination mechanism is obvious, the fire resistance and moisture resistance of the product are improved, and the paper meets the use requirements of customers through detection of indexes such as thickness, ring crush and breakage resistance.

In conclusion, after being desulfurized and purified, blast furnace slag is tempered into mineral wool harmless to human bodies, the mineral wool is pulverized by a pulper and then is precipitated in a pulp storage tank, the pulverized mineral wool and the pulp storage tank are mixed in an accurate ratio by an automatic proportion adjusting valve, cationic starch and nonionic auxiliary agents are adopted for stirring, the pulp is stored again into a tank, a sheet making machine, a calender, a paper winder and a rewinder are used for making low-cost novel environment-friendly bobbin base paper, and the paper board is inspected by indexes such as ration, thickness, ring crush index, internal bonding strength and the like, so that the use requirements of customers are met, and the current situation of insufficient papermaking raw materials in China is improved.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.